A can complete a work in 8 days, while B can do it in 16 days. How many days will they take together?
Show answer & explanation
Correct answer: B
Explanation
Given:
A works alone = 8 days
B works alone = 16 days
A's work rate = 1/8
B's work rate = 1/16
A + B's work rate = 1/8 + 1/16 = 3/16
Time = 1 ÷ (3/16) = 5⅓ days