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- Adam can do a job in 15 days, Eve can do the same job in 20 days.
Question 1:
Adam can do a job in 15 days, Eve can do the same job in 20 days. If they work together for 4 days on this job. What fraction of job is incomplete?
A. 1/4
B. 1/10
C. 7/15
D. 8/15
Feedback Adam can do 1/15 of the job per day
Eve can do 1/20 of the job per day
If they work together they can do 7/60 of the work together
Remaining job 1 - 7/60 = 32/60 = 8/15
Eve can do 1/20 of the job per day
If they work together they can do 7/60 of the work together
Remaining job 1 - 7/60 = 32/60 = 8/15
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