Arun and Vinay together can do a piece of work in 7 days. If Arun does twice as much work as Vinay in a given time, how long will Arun alone take to do the work?
Arun and Vinay together can do a piece of work in 7 days. If Arun does twice as much work as Vinay in a given time, how long will Arun alone take to do the work?
A. 6.33 days
B. 10.5 days
C. 11 days
D. 72 days
The correct answer is option B. 10.5 days. Can you explain this answer in the comments?
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