Question

Subhash can copy 50 pages in 10 hours; Subhash and Prakash together can copy 300 pages in 40 hours. In how much time can Prakash copy 30 pages?
A.13 h
B.12 h
C.11 h
D.9 h

Answer 1

Answer:

The correct option is B.

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Step-by-step explanation:

AS subhsh can do 50pages/10 hr

For 40 hours = 50*4/10*4

200/40 hrs

Prakash can copy 100 pages/40 hrs

so, 10 pages/4 hrs

30 pages/12 hrs

option B