SOLUTION: The rates of working of A and B are in the ratio 3:4. The number of day taken by them to finish the work are in the ratio?

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Question 1062825: The rates of working of A and B are in the ratio 3:4. The number of day taken by them to finish the work are in the ratio?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
A has the work rate 3%2Fx and B has rate 4%2Fx, unit of JOBS%2FDAYS.

ONE JOB
For A, %283%2Fx%29%2At=1
t=x%2F3

For B, %284%2Fx%29%2Ay=1
y=x%2F4

Question asks for t%2Fy
t%2Fy=%28x%2F3%29%2F%28x%2F4%29
highlight%28t%2Fy=4%2F3%29