TCS Company

A can copy 50 papers in 10 hours while both A & B can copy 70 papers in 10 hours.

Then how many hours required for B to copy 26 papers?

Read Solution (Total 4)

A can copy 50 papers in 10 hrs. so in 1 hr it will copy 5 papers. A+B copy 70 papers in 10 hrs. so A+B will copy 7 papers in 1 hr. b will copy in 1 hr=(7-5)=2paper. so to copy 26 papers=26/2=13 hrs.
12 years agoHelpfull: Yes(19) No(2)

i think 13 hrs
12 years agoHelpfull: Yes(2) No(4)
If in 10 hours, A can copy 50 papers, and A and B together can copy 70, then B must be copying 20 papers in 10 hours.

This means B copies 2 papers per hour. 10 / 10 = 1 and 20 / 10 = 2

If B copies 2 papers every hour, then it would take 13 hours for it to copy 26 papers.
12 years agoHelpfull: Yes(1) No(1)
13 is theeeeeeeee anserrrrrrr
12 years agoHelpfull: Yes(1) No(1)

TCS Other Question

A power unit is there by the bank of a river of 900 meters. A cable is made from power unit to power a plant opposite to that of the river of 2000mts. The cost of the cable below water is Rs. 5/- per meter and cost of cable on the bank is Rs. 4/- per meter. Then find out the amount to be invested to connect those two stations.
In a two-dimensional array, X (7, 9), with each element occupying 8 bytes of memory, with the address of the first element X (1, 1)=3000; find the starting address of the element at X (5,8)