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A worker can do a job in 5 hours, and his student can do the same job in 8 hours. What part of the work is left to finish after two hours of their working together?
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A worker can do a job in 5 hours, and his student can do the same job in 8 hours. What part of the work is left to finish after two hours of their working together?

User Alex Skorkin
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2 Answers

6 votes

Answer: 13/20

Think: How much can each of them do In 1 Hour (1/5 and 1/8) Then add those two together. Then multiply the sum by two. Finally Simplify the answer of 26/40 into 13/20

User Lemiant
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5.5k points
4 votes

Answer:

7/20

Explanation:

User Izidor
by
5.5k points
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