Ram and Ravi can do a job together in 8 days. Ram is 11/8 times as efficient as Ravi. The same job can be done by Ravi alone in Select one: a. 21 days b. 16 days c. 25 days d. 19 days
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Time taken by both together to complete work = 8 days
In 1 day they will do 1/8 work together
Let time taken by Ravi alone = x days
In 1 day he will do 1/x work alone
Ram is 11/8 times efficient than Ravi
In 1 day, Ram will do 11/8 * 1/x work alone = 11/8x work alone
So, 1/x + 11/8x = 1/8
Let 1/x = p
p + 11p/8 = 1/8
19p/8 = 1/8
p = 1/19
x = 19 days
Therefore, Ravi will do the work in 19 days alone.
In 1 day they will do 1/8 work together
Let time taken by Ravi alone = x days
In 1 day he will do 1/x work alone
Ram is 11/8 times efficient than Ravi
In 1 day, Ram will do 11/8 * 1/x work alone = 11/8x work alone
So, 1/x + 11/8x = 1/8
Let 1/x = p
p + 11p/8 = 1/8
19p/8 = 1/8
p = 1/19
x = 19 days
Therefore, Ravi will do the work in 19 days alone.
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