Latest TCS Aptitude Question SOLUTION: Q. Narendra can copy 50 pages in 10 hrs.Narenda and Prasad together can copy 300 pages in 40 hours. In how much time prasad can copy 30 pages.

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Q. Narendra can copy 50 pages in 10 hrs.Narenda and Prasad together can copy 300 pages in 40 hours. In how much time prasad can copy 30 pages.

Asked In TCS Narendra (10 years ago)

Solved Narendra Read Solution (8)

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Read Solution (8) :

Narendra  (10 years ago)

Narendra 's 1 hr copy page=50/10=5 page
(Narendra+prasad)'s 1 hr copy page=300/40=7.5 page
from above prasad's 1 hr copy page= 2.5 page
so time taken in 30 page's copy =(30/2.5)
=>Ans:-12 hrs

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Manjula  (10 years ago)

ans 12hrs
(50/10)+(30/x)=300/40
x=12hrs

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swethakottakota  (10 years ago)

ans: 12 hours
in 1 hour narendra can copy 5 pages.
let in 1 hour prasad can copy x pages.
from the given information, 5*40 + x*40 = 300
from this , x*4 = 10 i.e in hours, prasad can copy 10 pages, to for 30 pages he need 4*3 = 12 hours of time.

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sowndarya muddapu  (10 years ago)

Initially narendra can copy 50 pages in 10hrs
means in 1 hr he can copy 50/10=5 pages
narendra and prasad can copy 300 pages in 40 hrs
means in 1 hr they can copy 300/40=7.5 pages
7.5 can be written as 5+2.5
here already we know that narendra can copy 5 pages in 1 hr ..so reamining 2.5 will be copied by prasad in 1 hr..
1 hr -->2.5 pages
?-->30 pages
30*1/2.5=12 hrs.

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Charu Goyal  (10 years ago)

in 12 hours

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Pratanu Ranjan De  (10 years ago)

5pg 1hr
15/2pgs 1hr
5+x=15/2
x=15/2-5
thus x=5/2

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Nimbagallu Prasanna kumar  (10 years ago)

narendra 50 in 10hrs
narendra and prasad 300 in 40 hrs here narendra can write 200 pages in 40 hrs and remaining 100 pages prasad can write in 40hrs so,
1 page=40/100 hrs/page
1 page=0.4 hrs/page
for 30 pages 30*0.4=12
ANS:-12hrs

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nitin   (9 years ago)

narendra copy in 40 hours=50*40/10=200 pages
left 100 pages copy by prasad in 40 hours
so prasad copy 30 pages in 12 hour (40*30/100)

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