Question

Aptitude ques a petrol bunk needs 56 men to fill 20000 litres in 72 days. how many men are needed to fill 30000 litres in 63 days

Answer 1

Answer:

42 men required to do the work.

Step-by-step explanation:

Given:

56 men fill 20000 liters in 72 days.

To find: Number of men required to fill 30000 liters in 63 days.

We know that if $M_1$ persons can do $W_1$ work in $D_1$ days and $M_2$ persons can do $W_2$ work in $D_2$ days. then,

$M_1\:W_1\:D_1=M_2\:W_2\:D_2$

let x be the require number of men.

So,

$56\times20000\times72=x\times30000\times63$

$80640000=1890000x$

x = 42

Therefore, 42 men required to do the work.

Answer 2

Answer:

96 men required to do the work.

Step-by-step explanation:

56 men need to fill 20000 litres in 72 days

means:

1 man can fill = 20000/56 litres in 72 days

1 man can fill = (20000/56)*(1/72) litres in 1 day

then:

x men can fill 30000 litres in 63 days

x*(20000/56)*(1/72)*63 = 30000

x = 96 litres