Civil Service Exam Reviewer · Word Problems · hard
Liza can finish a job in 9 days and Rina in 16 days. They work together for 4 day(s), then Rina leaves. How many days in all does it take to finish the job?
- 6 3/4 days
- 5 19/25 days
- 2 3/4 days
- 12 1/2 days
Answer
A. 6 3/4 days
Solution
In 4 day(s) together they finish 25/36. Remaining 11/36 takes Liza 2 3/4 days. Total = 4 + 2 3/4 = 6 3/4 days.
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