CBSE BOARD XII, asked by kumaranvig, 1 month ago

A alone can complete a work in 10 hours. B alone can complete a work in 12 hours. C alone in 5 hours. All start working together. but c left after 3 hours and b had left 4 hours. in how many hours work is complete​

Answers

Answered by reetarora2009
1

Answer:

3 hours

Explanation:

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