math question

[buoyant steeple]

someone bought a car for 480,000$ and he paid 182,000$ at the moment, and will pay the rest by giving 2,000$ each month.
how many months does he need to finish paying for the car?

[buoyant steeple]

there is no calculator allowed so i want to know how do i solve this type of question

[eternal cedar]

149

You first subtract the paid amount form the cost

to find out how mucj you need to pay

[buoyant steeple]

yeah so that equals 298,000$

[eternal cedar]

And then divide by 2000

for each month

[buoyant steeple]

there is no calculator allowed

[eternal cedar]

so the answer is 149

We indians do this in our brain bro

[buoyant steeple]

teach me how then

[eternal cedar]

you know fractions

a/b style numbers

?

[buoyant steeple]

yeah

[eternal cedar]

then write the number you want to divide in the place of A

And then write the number by which you divide by in place of B

If done, let me knwo

know*

[buoyant steeple]

yes

[eternal cedar]

then find any common factors

[buoyant steeple]

the 0's

[eternal cedar]

like in your example you have 1000

just cancel those out

[buoyant steeple]

yeah

[eternal cedar]

the zeros

[buoyant steeple]

298/2

[eternal cedar]

and then you will have 298/2

you can easily do that

[buoyant steeple]

yeah 149

thanks

[eternal cedar]

That's it!

Welcome bro

[buoyant steeple]

hey i have another question

[twilit heart]

What is it

[buoyant steeple]

20³ + 20² + 20¹ + 20⁰ = ?

how do i solve this quickly

i want a way to be able to solve it fast

[twilit heart]

Wait

[buoyant steeple]

no problem

[twilit heart]

You know the powers of 2?

[buoyant steeple]

like 20x20 ?

[twilit heart]

Yeah

[buoyant steeple]

4k ?

[twilit heart]

Yeah...

Like see if you can add them

[buoyant steeple]

like

there is no calculator allowed

[twilit heart]

What's 20³?

[twilit heart]

Need none

[buoyant steeple]

idk hold on

[twilit heart]

What's 2x2?

[buoyant steeple]

20x20 is 400 not 4k sorry

[buoyant steeple]

2

nah jk

4

[twilit heart]

I missed the k

[twilit heart]

And 2x4?

[buoyant steeple]

8

[twilit heart]

2³=2x2x2

[buoyant steeple]

yeah ik that

[twilit heart]

You can literally get an aid when you remember this table of power of 2

2⁰=1
2¹=2
2²=4 and so on

[buoyant steeple]

8

then 16 ?

[twilit heart]

This still help me

[buoyant steeple]

then 32

64

[twilit heart]

Multiply with 2 again

[buoyant steeple]

128

256

[twilit heart]

Good

[buoyant steeple]

512

1024

[twilit heart]

Remember this thing

Yeah

[buoyant steeple]

yeah

[twilit heart]

Enough

Cuz in these tricky questions these small elements are only twisted

You just can't find the pattern if you have not practiced enough

[eternal cedar]

ever tried IMO?

[buoyant steeple]

yeah the entire exam i'm gonna have is full of these tricky questions, 120 to be exact and i'm just practicing for it

[eternal cedar]

We are not allowed to use calculators

[buoyant steeple]

imo?

[eternal cedar]

That is a bummer

[twilit heart]

Bruh I literally raised my question in forum

[buoyant steeple]

same

[eternal cedar]

ha

[twilit heart]

Now back to that question

[buoyant steeple]

yeah

[twilit heart]

20³+20²+20¹+20⁰=?

Wait lemme add one more detail in your head really quick

[buoyant steeple]

yeah

[twilit heart]

Can you write 20³ as (2x10)³?

[buoyant steeple]

yeah? cuz you need to do the () first is that right

[twilit heart]

Wait...

You're correct though

So now, can you also write

(2x10)³=2³x10³?

[buoyant steeple]

yeah

i learned that in high school

called توزيع ( idk the english term )

Distribution ؟

[twilit heart]

LHS=RHS is the biggest nightmare in later algebra

[twilit heart]

I forgot😅

[buoyant steeple]

np

[twilit heart]

Association or distribution, smth btwn them

[buoyant steeple]

we are currently learning about Hyperbolas in school

[buoyant steeple]

yeah

[twilit heart]

So... as you have written 2³x10³=20³

Try solving 2³ first then multiply with 10³

[twilit heart]

You're in 11th too? 💀

[buoyant steeple]

in multiplication do we not combine the ³ ?

[buoyant steeple]

12th, last year of high school

[twilit heart]

Bro you just use the formulas of geometric progression then

I just took my question book out for that chapter

[buoyant steeple]

we didn't learn that yet

[twilit heart]

You're in 12th bruh💀

I'm in 11th

[buoyant steeple]

hold on i'm having trouble with the english terms

[twilit heart]

And struggling to use it in difficult question

[buoyant steeple]

i'm not sure if i learned that or not

[twilit heart]

Okay...

[buoyant steeple]

so how do i do that question

[twilit heart]

Do you guys solve questions like this?

[twilit heart]

In the formula... I've lost track of that chapter now, I have to go through the chapter again

[buoyant steeple]

i've seen some of it before tho not sure

[twilit heart]

Back to that question
20³=2³x10³

20²=20²x10² and so on
Right?

Shit

[buoyant steeple]

uhh

wait

[twilit heart]

2²x10²

Sorry, my bad

[buoyant steeple]

why did you subtract 1 of each and added a zero

[buoyant steeple]

yeah

[twilit heart]

2³=8 10³=1000

8×1000?

[buoyant steeple]

8k

[twilit heart]

And for 20²?

[buoyant steeple]

400

[twilit heart]

For power 1 and 0?

[buoyant steeple]

20
and the power of zero is 1 ?

[twilit heart]

Yeah

[eternal cedar]

wait

[twilit heart]

Now add them

[buoyant steeple]

8421

[eternal cedar]

I'm in 9th grade

[twilit heart]

His basics are not clear

[eternal cedar]

oh

[twilit heart]

Ig

[eternal cedar]

i see

[twilit heart]

💀

Or

[eternal cedar]

Nut you can get better if you start larning them again

but*

[twilit heart]

Or He isn't sure if he's right

[eternal cedar]

hmm

[buoyant steeple]

it depends on where you are from, i am not studying for school, this is a different type of exam that just depends on your brain skills ig, i'm only here asking how do i do them quickly because i only have about 30s for each question

[eternal cedar]

They don't teach you this in school?

[twilit heart]

I literally solved it in 5sec
But was thinking you're in junior grades so I was encouraging you

[buoyant steeple]

they do

[buoyant steeple]

nope

there are questions like (If Saad walked a quarter of what Fahd walked, and Fahd walked three mile of what Nasser walked. Find the ratio of what Saad walked to Nasser.)

[twilit heart]

Mmm I hate those proportion questions

[eternal cedar]

you should use one variable

and relate to it

[twilit heart]

Too much reasoning, dw keep bringing questions, we'll help and learn together

[eternal cedar]

THat will make it simpler

yeah true

[twilit heart]

I still hate those questions
I take the wrong value in numerator when equation isn't given

[eternal cedar]

yeah

these are the questions wher I make the most mistakes

I don't have super good concentration

[buoyant steeple]

most questions are like this, there are quite alot of questions so i either have to memorize them all ( about 45k pages ) or just know how to solve them so i can solve any that i encounter

[twilit heart]

Me in 11th still avoid them

[buoyant steeple]

56 balls are distributed among 7 brothers, so that each brother takes two more balls than the younger brother. How much does the middle brother take?

[twilit heart]

Try finding easy approach and not put your brain on overload when seeing those questions

[twilit heart]

Lemme try

[buoyant steeple]

yeah i'm trying to practice, most of my day is just doing this over and over again

[twilit heart]

Me in daydreaming 😭

[eternal cedar]

x + x + 2 + x + 4 + x + 8 + x + 10 + x + 12 + x + 14 = 56

sorry

tht was wrong

[twilit heart]

It's an AP, now I have recognised

[buoyant steeple]

7x+(2+4+6+8+10+12)=56

[twilit heart]

56 is the sum

[twilit heart]

a+(n-1)d

[eternal cedar]

I havent learnt that

[twilit heart]

D is 2

[eternal cedar]

I need to thoguh

[twilit heart]

You'll get it in 10th

Ch 5 ig

[eternal cedar]

yeah

ncert?

[twilit heart]

Easiest ch if practice everyday

Yeah

[buoyant steeple]

7x=56−42
then 7x=14 so x=2 ?

[eternal cedar]

ncert is kind of very easy though

[eternal cedar]

true

[twilit heart]

That's what I got and realised it's an AP

التقدم الحسابي

[eternal cedar]

?

[twilit heart]

RD Sharma questions are good

[buoyant steeple]

how do i know how many balls does each brother take

if i divide 56 by 7 it's 8

so each gets 8

[twilit heart]

Find 'a' value

[eternal cedar]

yeah

[buoyant steeple]

what's n and d

[twilit heart]

N 7
D 2

Brothers are 7

[buoyant steeple]

oh

a ( 7-1 ) 2

[twilit heart]

Mm

Lol wrong

[buoyant steeple]

._.

[twilit heart]

Need Sn formula

I've confused us all 😭

[buoyant steeple]

i need to go sorry

bye

[twilit heart]

Sn=n/2(2a +(n-1)d)

Bye

[eternal cedar]

Bye Bye!

[twilit heart]

a=2

Answer is= 10x²+10x-60=0

[ruby kite]

"someone bought a car for 480,000$ and he paid 182,000$ at the moment"
so there rests 480000-182000= 298000$

how much months is: 298000/2000 = 149 month