Asked by Hoor
Bilawal can build a wall in 15 days and Bilal in 20 days. If the work on it together for to days , then the fraction of the work ?
Answers
Answered by
Steve
assuming you meant two days, then that would be
2(1/15 + 1/20) = ??
2(1/15 + 1/20) = ??
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