Multiple choice

In order to complete a work in $28$ days, $60$ men are required. How many men will be required if the same work is to be completed in $40$ days?

  1. $42$ 
  2. $32$ 
  3. $48$ 
  4. $38$ 
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is an inverse proportion problem: M1 * D1 = M2 * D2. So, 60 * 28 = M2 * 40. Solving for M2 gives (60 * 28) / 40 = 42.

AI explanation

Using the formula for inverse proportionality, the total work is 60 men multiplied by 28 days, which gives 1680 man-days. To complete the same work in 40 days, the required men equal 1680 man-days divided by 40 days, resulting in 42 men.

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