Satyaki Roy
Answered On : Oct 30th, 2006
A can copy 50 pages in 10 hrs.
A can copy 5 pages in 1hr.(50/10)
now A & B can copy 70 pages in 10hrs.
thus, B can copy 90 pages in 10 hrs.[eqn. is (50+x)/2=70, where x--> no. of pages B can copy in 10 hrs.]
so, B can copy 9 pages in 1hr.
therefore, to copy 26 pages B will need almost 3hrs.
since in 3hrs B can copy 27 pages.
1 User has rated as useful.
Login to rate this answer.
itwasnoteasy
Answered On : Nov 15th, 2006
you assumed that they together can copy 140 pages coz' 70 per head, which is wrong. its clearly mentioned 70 pages together. if you go by your way it would 140-50 = 90 which B can copy in 10 hrs. which is not right.Rather, 70-50 = 20, which B can copy in 10 hrs. so B would copy 26 pages in:(26/20)*10 = 13 hrs.
3 Users have rated as useful.
Login to rate this answer.
Vijayakumar
Answered On : Dec 20th, 2006
Little elaborative
If A can copy 50 pages in 10 hour, Then
A = 50,
If A + B can copy 70 pages in 10 hour, then say
A + B = 70
B = 70 - 50 (Substituted A's value since A can copy 50 pages in 10 hour)
B = 20 but for 10 hours.
20 pages = 10 hour
1 page = 10/20 => 0.5hr
26 pages = (26 * 0.5) or (26 * 1/2)
26 pages = 13 hour
3 Users have rated as useful.
Login to rate this answer.
Ranganath
Answered On : Feb 14th, 2007
A can type 5 pages in an hour 50/10A and B can type 7 pages in one hour 70/10A and B 7 pages and A alone types 5 pages in one hour so diff s 2 pages so B types 2 pages in one hour for B2 pages -1 hour26 pages - x hoursso b can type 26 pages in 13 hours
2 Users have rated as useful.
Login to rate this answer.
RANA
Answered On : Mar 19th, 2007
1.5 hrs
Login to rate this answer.
kanimozhi
Answered On : Sep 22nd, 2011
1hr and 18mins
Login to rate this answer.
dhiv
Answered On : Sep 23rd, 2011
13 hours
Login to rate this answer.
sneha kandure
Answered On : Sep 25th, 2011
13 hours
1 User has rated as useful.
Login to rate this answer.
jaya prakash
Answered On : Sep 26th, 2011
In 10 hours A and B can copy 70 pages.
50+x=70,where x=no. of pages copied by B in 10 hours.
s0,x=20 pages in 10 hours.
so,time taken for 26 pages =10/20*26=13 hours.
Login to rate this answer.
rohit
Answered On : Sep 26th, 2011
13 hours for B to print 26 pages
Login to rate this answer.
mohan bhavariya
Answered On : Oct 6th, 2011
a in 1 hour 5 pages
both in 1 hour 7 pages
means b 2 pages in 1 hour.
so 26 pages in 13 hour ok.
Login to rate this answer.
kishore
Answered On : Oct 6th, 2011
13
Login to rate this answer.
prashant chitte
Answered On : Dec 20th, 2011
25
Login to rate this answer.
13
Login to rate this answer.
Vivek.B
Answered On : Jan 26th, 2012
13
Login to rate this answer.
13
Login to rate this answer.
vivek
Answered On : Mar 3rd, 2012
in 10 hrs b write= 70-50=20
20 pages-in------10 hrs
therefore1 page in 1/2 hrs
therefore 6pages in 3 hrs
therefore 20+6 in 10+3 hrs
so the ans. is 23 hrs
Login to rate this answer.
Answered On : Oct 13th, 2012
13
Login to rate this answer.
