A's efficiency is twice that of B's. A can work only for 8 hours a day, while B can work for 12 hours a day. If A can finish a work in 12 days, in how many days can B finish the same work?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 16
Given that
A : B = 2: 1
A can work only for 8 hours a day
B can work for 12 hours a day
If A can finish a work in 12 days
Let B can finish that work in D days
According to the question
⇒ A × 8 × 12 = B × 12 × D
⇒ 2 × 8 × 12 = 1 × 12 × D
⇒ D = 16 days