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?
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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?
- 110 hoursfalse
- 220 hoursfalse
- 330 hourstrue
- 440 hoursfalse
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