Q: A and B together can plough a field in 10 hours but by himself A re – McqOptions

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1.	Q: A and B together can plough a field in 10 hours but by himself A requires 15 hours. How long would B take to plough the same field?
A.	10 hours
B.	20 hours
C.	30 hours
D.	40 hours
Answer» D. 40 hours

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