Latest TCS Aptitude Question SOLUTION: A can copy 50 pages in 10 hrs while A and B copy 70 pages in 10 hrs.Then how many hrs required for B to copy 26 pages?

• Placement Papers
• /
• TCS
• /
• Category

TCS Question Papers: TCS Interview Experience(90) TCS Company Profile

(#M40037943) TCS Category question Keep an EYE

A can copy 50 pages in 10 hrs while A and B copy 70 pages in 10 hrs.Then how many hrs required for B to copy 26 pages?

Asked In TCS Mayank (9 years ago)

Unsolved Read Solution (14)

Is this Puzzle helpful?   (16)   (1) Submit Your Solution

Read Solution (14) :

BISWAJIT NATH  (9 years ago)

A in 1hr copies (50/10)or 5 pages. (A+B) in 1hr copies (70/10) or 7 pages.
therefore, B in 1hr copies 2 pages. so B copies 26 pages in (26/2) or 13hrs.

Is this solution Helpfull? Yes (24) | No   

AMIT KUMAR SHAW  (9 years ago)

A can copy =50/10=5pages/hr
A+B can copy=70/10=7pages/hr
Hence,
(A+B)-A=(7-5)pages/hr
or,B=2pages/hr
So,B wil required =26/2=13hrs. to complete copy of 26 pages

Is this solution Helpfull? Yes (3) | No   

Niraj Ojha  (9 years ago)

B can copy in 10 hr=A and B together- A
70-50=20
Since 20 pages copied in 10 hr
So 26 =20/10*26=13

Is this solution Helpfull? Yes (1) | No   

Lopamudra sahoo  (9 years ago)

in 10 hrs A can copy 50 pages
Both A&B can copy in 10 hrs 70 pages
i.e B can copy 20 pages in 10hrs
similarly for 26 pages he requires 13hrs :)

Is this solution Helpfull? Yes (1) | No   

manaswini devabhakthuni  (9 years ago)

a can copy 5pages in 1 hr(50/10),a+b can copy 7 pages in 1 hr.hence b can copy 2 pages in 1 hr..total 26 pages can be copied in 26/2=13hr

Is this solution Helpfull? Yes (1) | No   

uddagiri pragnya  (9 years ago)

A can copy 50 pages in 10 hrs, so 1 page can be copied in (10/50)=(1/5)hr.

A and B can copy 70 pages in 10 hrs, so 1 page can be copied by A & B in (10/70)=(1/7)hr.

which means (1/A)+(1/B)=7hr. solve using A=(1/5)hr and then B=(1/2).
B can copy one page in (1/2)hr. so 26 pages can be copied in (26*1/2)hrs=13hrs

Is this solution Helpfull? Yes (1) | No   

mohit tuteja  (9 years ago)

13 hrs will be the ans..
rate of A alone is 50/10.
let rate of B be x for 10 hrs
if both work together then 10(50/10 + x/10)=70
x=20, so in 10hrs B copy 20 pages so 26 pages will be copied in 13hrs

Is this solution Helpfull? Yes | No   

prateek  (9 years ago)

a can copy 50 pages let A=50,similarly A+B=70 both are in 10 hrs, by substituting value of A in 2nd eqn,we get B=20 in 10 hrs if 20 pages in 10 hrs then 26 pages equals (10/20)*26=13...

Is this solution Helpfull? Yes | No   

LOKESH RANJAN  (9 years ago)

13 hr, as A+B=7 in 1 hr, so B=2 in 1 hr.

Is this solution Helpfull? Yes | No   

Sarbartha Mallick  (9 years ago)

26*(70/50-1)*(10/50)

Is this solution Helpfull? Yes | No   

pallak kumari  (9 years ago)

time taken by a to copy pages=1050
time taken by both a and b=1070
time taken by b to copy pages=x26
1a+1b=1a+b
5010+26x=7010
x=13

Is this solution Helpfull? Yes | No   

Thummala Vinay Kumar  (9 years ago)

13 hrs


A can do 5pages in 1hr
and then B can do 2 pages in 1hr
so,only B can take 13hrs to copy 26 pages..

Is this solution Helpfull? Yes | No   

Pranay Banerjee  (9 years ago)

A in 1hr copies (50/10)or 5 pages. (A+B) in 1hr copies (70/10) or 7 pages.
therefore, B in 1hr copies 2 pages. so B copies 26 pages in (26/2) or 13hrs.

Is this solution Helpfull? Yes | No   

raghavendra  (9 years ago)

A can copy 50 pages in 10 hrs
A+B=70 in 10 hrs
B=20 in 10 hrs
b can copy 26 pages in 13 hrs

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.