Question

it takes 8men 10hours to build a wall,how long it would take four men?​

Answer 1

Answer:

20hours it's inverse proportion

Answer 2

Answer:

Given,

Time taken by 8 men to build a wall = 10hrs

Let, Time taken by 4 men to build a wall = X hrs

Then,

Total man-hours = 8×10 = 80.

For 4 men = 80/4 => 20 hrs.

Explanation:

Hope it helps you...