A man completes 5⁄8 of a job in 10 days. At this rate, how many more days are needed to finish the job?
Aptitude
Chain Rule
Difficulty: Easy
Choose an option
-
A4 days
-
B5 days
-
C6 days
-
D8 days
Answer
Correct Answer: 6 days
Explanation
Given data
- Work done in 10 days = 5/8 of job
Concept / Approach
- Rate = (work)/(time). Remaining work = 1 − 5/8 = 3/8.
Step-by-step calculationDaily rate = (5/8) ÷ 10 = 1/16 of the job per dayTime for remaining 3/8 = (3/8) ÷ (1/16) = (3/8) × 16 = 6
Quick checkTotal time = 10 + 6 = 16 days → 16 × (1/16) = 1 job.
Final Answer6 days