Question

A wall of 60 m long can be built by 36 men in 21 days. Number of men required to build the same wall in 14 days, is

• A. 50
• B. 52
• C. 54
• D. 56

Hint:

For constant work, use the relation: Men $\times$ Days = Constant.

Answer 1

The Correct Option is C

Concept: Work is proportional to (Men $\times$ Days) when the total work remains constant. Explanation: Let total work = constant. Using the formula: \[ M_1 \times D_1 = M_2 \times D_2 \] \[ 36 \times 21 = M \times 14 \] \[ M = \frac{36 \times 21}{14} = 54 \]