Two friends can complete a piece of work in 5 days . if the first friend alone can complete the same work in 15 days.how many days will the second friend take to complete the work
Hruthika11:
I think 15 days
it's 7.5 days
Oh
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time taken by first friend alone=15 days=1/15
time taken by both together=5 days=1/5
time taken by second friend=1/5-1/15=2/15
means he takes 15/2 days=7.5 days
time taken by both together=5 days=1/5
time taken by second friend=1/5-1/15=2/15
means he takes 15/2 days=7.5 days
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