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In a certain factory there are five w...

In a certain factory there are five workers `A ,\ B ,\ C ,\ D` and `E` . `A` can complete a work in 4 minutes, `B` in 5 minutes, `C` in 6 minutes, `D` in 10 minutes and `E` in 12 minutes. The average number of units of work completed per worker per minute will be (a) 0.16 (b) 0.172 (c) 0.80 (d) 0.87

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RS AGGARWAL-AVERAGE-All Questions
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