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[midnight elbow]

Two workers received that real order. At first, the first worker worked for 1 hour, then for 4 hours - both together. The first worker alone could fulfill this order 5 hours later than the second. How many hours would it take each worker to complete the order working individually? answers 25h 20h

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[ripe wave]

Suppose the rates (in job/h) of workers are v1 and v2. Then we get a system:
v1 + 4(v1 + v2) = 1
1/v1 - 1/v2 = 5
However, I don't think that gives the correct answer. Are you sure that you copied the statement correctly?

[midnight elbow]

yeah

[ripe wave]

Can you take a photo or a screenshot of the problem, if possible?

[midnight elbow]

but i think it will exercise mistake because i asked many people and they havent got these answers

[midnight elbow]

sorry, but im not an english student

[midnight elbow]

but translated i think good

[ripe wave]

Oh. Well, still, can you provide a photo/screenshot? Just in case.

[midnight elbow]

its just words given xd

but if you want i can give you

its b task and the Lithuanian language is written here

[ripe wave]

Hm, yeah. Seems like it's correctly translated. But the answer can't be what's given, as that doesn't satisfy the first condition.

[midnight elbow]

yeah so must be error in this exercise

[ripe wave]

Probably.

Oh, actually.

I've looked online, and there's a variant of this exercise where in the first condition they only do 40% of the job.

In that case we get:
v1 + 4(v1 + v2) = 2/5
1/v1 - 1/v2 = 5

And that does produce the given answer.

Maybe they copied the problem from another resource, but forgot about the 40%?