Question

By working 5 hours/day, 4 waiters can serve 250 dishes in 8 days. 2 waiters would require how many hours/day to serve 500 dishes in 20 days?​

Answer 1

Step-by-step explanation:

There is a work equivalence that says

(M1*D1*H1)/W1 = (M2*D2*H2)/W2

Here M1 means the number of men before and M2 means number of men afterwards.

D stands for number of days and H stands for the hours per day.

W stands for the amount of work done.

So by plugging the values in the question, we get

(4*8*5)/250 = (2*20*H2)/500

16/25 = 40(H2)/500

16 = 2(H2)

H2 = 8

So 2 waiters would have to work 8 hours a day to do 500 dishes in 20 days.