Question

4 waiters can serve 250 dishes in 8 days by working 5 hours/day. for how many hours/day would 2 waiters have to work to serve 500 dishes in 20 days?

Answer 1

The answer is in the picture

Answer 2

Answer:

8 hours/day

Step-by-step explanation:

Given :4 waiters can serve 250 dishes in 8 days by working 5 hours/day.

To Find :For how many hours/day would 2 waiters have to work to serve 500 dishes in 20 days?

Solution:

4 waiters can serve 250 dishes in 8 days by working 5 hours/day.

Let $M_1$ be the men initially

So, $M_1$ = 4

Let $W_1$ be the work done initially

So, $W_1$ = 250

Let $D_1$ be the no. of days initially

So, $D_1$ = 8

Let $H_1$ be the hours per day initially

So, $H_1$ = 5

Let $M_2$ be the men afterwards

So, $M_2$ = 2

Let $W_2$ be the work done afterwards

So, $W_2$ = 500

Let $D_2$ be the no. of days afterwards

So, $D_1$ = 20

Let $H_1$ be the hours per day afterwards

So, $H_2$ = ?

So, relation : $\frac{M_1 \times H_1 \times D_1}{W_1} =\frac{M_2 \times H_2 \times D_2}{W_2}$

$\frac{4 \times 5 \times 8}{250} =\frac{2 \times ? \times 20}{500}$

$8 =?$

So,  8 hours/day would 2 waiters have to work to serve 500 dishes in 20 days.