sunil can complete a work in 4 days whereas dinesh it 6..., Time & Work, General Mathematics

Question:Sunil can complete a work in 4 days whereas Dinesh  can complete it in 6 days. Ramesh works `1 1/2` times as fast as Sunil. How many days will it take for the three together to complete the work ?

A `7/12` 
B `1 5/7` 
C `1 5/12` 
D None of these

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+ AnswerD

+ Explanationsolution:
Time taken by Ramesh alone `= (2/3 xx 4)`
                                       `= 8/3` days.
Their 1 day's work `= (1/4 + 1/6 + 3/8)`
                         `= 19/24`.
`:.`Three together can finish the work in `24/19`
                                                        `= 1 5/19` days.

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