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Meena can paint a fence in 18 days and Geeta in 9 days. If they join hands, the fence is done in

A5 days
B6 days
C7 days
D8 days
Answer & Solution
Correct answer: B. 6 days
Together they paint 1/18 + 1/9 = 3/18 = 1/6 of the fence daily, so 6 days.
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