TCS Company Numerical Ability Time and Work

There are two pipes A and B. If A filled 10 liters in an hour, B can fill 20 liters in same time. Likewise B can fill 10, 20, 40, 80, 160. If B filled 1/16 of a tank in 3 hours, how much time will it take to fill the tank completely?
a) 9 B) 8 c) 7 d) 6

Read Solution (Total 2)

1/16 in 3 hours
1/8 in 4 hours
1/4 in 5 hours
1/2 in 6 hours
1 in 7 hours
answer is 7 hours
14 years agoHelpfull: Yes(30) No(14)

now suppose the tank is of 80 liter........
now in 3 hrs 1/16th tank can be filled.
so,
80/16=5liters.
now,in 3hrs=5liters.
4hrs=10litere.
5hrs=20liters.
6hrs=40liters
7hrs=80liters.....
hence proved.....
:)
9 years agoHelpfull: Yes(3) No(1)

TCS Other Question

(1/2) of a number is 3 more than the (1/6) of the same number?
a) 6 b)7 c)8 d)9 6 persons standing in queue with different age group, after two years their average age will be 43 and seventh person joined with them. Hence the current average age has become 45. Find the age of seventh person?
a) 43 b)69 c)52 d)31