A does 3/8 as much as work as B in 5/6 of the time, B takes 87 days to complete the work alone. How much time does A&B together will take to complete the work?
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According to question
A 3/8 time work =B 5/6 time work
so simply we have parts of work in terms of A and B
in this type of questions we use allegation
first we find new ratio from cross multiplication both sides
3/8 =5/6
6×3=5×8
18:40 now we find New ratio 9:20 =A:B
for find total time of work who done by for A + =20/29×87=60
so our answer is 60.
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