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Max@Math Revolution
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[GMAT math practice question]
If A works a job alone, it takes x days. If B does it alone, it takes y days. If A and B work together, they can do 3/20 of the total amount of the job per day. A and B worked together for 5 days, and A worked the rest for 3 days. What is the value of x + y?
A. 20
B. 21
C. 25
D. 27
E. 29
If A works a job alone, it takes x days. If B does it alone, it takes y days. If A and B work together, they can do 3/20 of the total amount of the job per day. A and B worked together for 5 days, and A worked the rest for 3 days. What is the value of x + y?
A. 20
B. 21
C. 25
D. 27
E. 29
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