Question

20 men working 9 hours per day can complete a work in 12 days. To complete the same work in 15 days working 12 hours a day, the number of men required is

Pls Answer Correctly or I will report​

Answer 1

Answer:

Working 9 hrs in a day men needed=20

⇒ Working 1 hr in 1 day men needed =20×9×12

⇒ Working 12 hrs in 15

$⇒  \frac{20 \times 9 \times 12}{ 15 \times 12} \\ = 12 \: men$

hence the ans is 12. 12 men needed to complete the same work.

Answer 2

Answer:

7 men are required to complete the same work in 15 days working 12 hours a day.

Step-by-step explanation:

Given, 20 men working 9 hours per day can complete a work in 12 days.

to find: number of men required to complete the same work in 15 days working 12 hours a day

Let the number of men required to complete the same work in 15 days working 12 hours a day be 'M'

Men       20        M

hours      9          12

Days       12         15

then,

20×9×12 = 12×15×M

1260 = 180M

$M = \frac{1260}{180} = 7$

therefore, 7 men are required to complete the same work in 15 days working 12 hours a day.