Question

Subhash can copy 50 pages in 10 hours. subhash and prakash together copy 300 pages in 40 hours. in how much time can prakash copy 30 pages?

Answer 1

Hey, sup!

Subhash can copy 50 pages in 10 hours.
That means in 40 hours he can copy 50×4=200 pages.

Subhash and prakash together can copy 300pages in 40 hours.

That means prakash alone can copy 300-200=100 pages in 40 hours.

So to copy 30 pages prakash will take 40/100 ×30 = 12 hours.

Hope you understand and it helps.

Answer 2

Answer:

S + p = 300 pages in 40 hrs

 then 1hr= 300/40=30/4.

s is copy of 5 pages in 1 hr and p is copy of x pages in 1 hr then ,

                                 5+x=30/4

                                   x=2.5

       since p is 2.5 pages in 1 hr then 30 pages ..

                   30/2.5=12 .ANS.

Step-by-step explanation: