X-can-finish-a-work-in-15-days-at-8hrs-a-day-Y-can-finish-it-in-6-2-3-days-at-9-hrs-a-day-Find-in-how-many-days-X-and-Y-can-finish-it-working-together-10-hrs-a-day-

Question Number 46891 by shivshant0409 last updated on 02/Nov/18

X can finish a work in 15 days at 8 hrs .

a day . Y can finish it in 6 \frac{2}{3} days at

9 hrs . a day . Find in how many days

X and Y can finish it working together

10 hrs . a day ?

Answered by MJS last updated on 02/Nov/18

X makes \frac{1}{120} work per hour

Y makes \frac{1}{60} work per hour

X + Y make (\frac{1}{120} + \frac{1}{60}) work per hour =

= \frac{1}{40} work per hour \Rightarrow {they}^{'} re finished after

40 hours = 4 days at 10 hours a day

Facebook Tweet Pin