A is 40% more efficient than B. If B finishes a work in 14 days, then in how many days will A finish the same work?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 10.
Assume total work = LCM of 14 = 14 units
B takes 14 days ⇒ B's efficiency = 14/14 = 1 unit/day
A is 40% more efficient ⇒ A's efficiency = 1 + 40% = 1.4 units/day
A’s time = 14 units/1.4 =10 days