A alone can do a work in 40 days. the ratio of time taken by a and b to do the same work is 5 : 3. then, find in how many days both will complete the work together ?
Answers
Answered by
2
Let b alone can do the work in x days
Therefore 5: 3 = 40:x
Therefore 5/3=40/x
5x = 120
x=24; b alone can do in 24 days
A's one day work = 1/40
B's one day work = 1/24
Therefore a+b one day's work = 1/40+1/24=8/120=1/15
Therefore a+b can together finish the work in 15 days
Similar questions