A and B together can complete a job in 8 days. If A alone can do it in 16 days, how many days will B alone take?
Show answer & explanation
Correct answer: A
Explanation
Given:
A and B work together = 8 days
A works alone = 16 days
Formula:
Work rate = 1 / time
Work rate of A + B = 1/8
Work rate of A = 1/16
Work rate of B = 1/8 − 1/16 = 1/16
Time of B = 1 ÷ (1/16) = 16 days