how to solve?

👨🏻‍🏫 學術台數學

[匿名]

2014-12-15 2:22 pm

A can do a piece of work in 20 days. B is 25% more efficient than A. The number of days taken by B to do the same piece of work is

回答 (1)

cidyah

2014-12-15 2:46 pm

If B is 25% more efficient means B could do the work in (20)(0.75) = 15 days

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