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Question

P is 30% more efficient than Q.P can complete a work in 23 days. If P and Q work together, how much time will it take to complete the same work?
  1. 9
  2. 11
  3. 13
  4. 15

A
11
B
13
C
15
D
9
Solution
Verified by Toppr

Work done by P in 1 day=123
Let work done by Q in 1 day=q
q×130100=123
q=10023×130=1023×13
Work done by P and Q in 1 day=123+1023×13=2323×13=113
P and Q together can do the work in 13 days.

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