Question

Initially it was planned that 16 workers are required to build the wall in 48 hours. But due to some reason 4 workers did not show up for work. Now, the contractor wants the wall to be built in 32 hours. How many more workers are required to complete the job?

• A. 4
• B. 8
• C. 12
• D. 16

Answer 1

The correct option is B

8

Given that 16 workers take 48 hours to build the wall. If the time is reduced to 32 hours, then let the number of workers required be y.
16 × 48 = y × 32
y = 24
Now, since 4 workers did not come for work, the remaining number of workers at the site is 16-4 = 12
Thus, additional number of workers required will be 24 - 12 = 12.