1.

P and Q can do piece of work in 10 days in 10 days and 35 days. Respectively. If they work on alternate days begnining wit Q, in how may will the work be completed?A. `15(5)/(7)`B. `15(5)/(7)`C. `16(4)/(7)`D. `15(4)/(7)`

Answer» Correct Answer - B
(i) Find the work done by P and Q in one day and proceed.
(ii) Fire of all find the part of the work done by Q and P in a period of 2 days.
(iii) Then find total number of such periods (integer) required.
(iv) Then find the time taken to complete remainig part startig with Q and then P.


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