In the question "I invested $250,000 at 9% simple interest. How long will it take to earn $6000 interest?" They subtracted 6000 from $250,000 to get 244,000 as the interest in the formula T= 100 x I/PR. Why?
#Why did they subtract the interest?
lunar imp
we never did this before with other equations so I'm wonder why it was did this way here.
magic valley
In the question "I invested $250,000 at 9% simple interest. How long will it tak...
isn't this just like
9% × $250,000 × T = $6000
T = ...
?
lunar imp
@magic valley The formula for time is T=100I/PR, so 100 x 6000/250,000 x 9
magic valley
<@985005820708278296> The formula for time is T=100I/PR, so 100 x 6000/250,000 x...
yea that's the same as mine
lunar imp
In that case, I'm not sure why she would subtract it.
magic valley
In that case, I'm not sure why she would subtract it.
so she use P = 244,000 instead of 250,000?
lunar imp
so she use P = 244,000 instead of 250,000?
no, 250,000 was still P, but she used 244,000 for the I in the formula
magic valley
no, 250,000 was still P, but she used 244,000 for the I in the formula
mhm that's weird