emptying pipe
Fri, 2008-10-24 16:57
Pipe A can work as a filling as well as an emptying pipe with the same capacity while B is only a filling pipe. The time taken by B along with A when A works as filling pipe is one-third of the time taken by B along with A when A works as an emptying pipe. What is the ratio of the time taken by A and B to fill the tank?
a. 1 : 2
b. 2 : 1
c. 1 : 3
d. 3 : 1
__________________
n/a
here u can make equation
(1/B)+(1/A)=3{(1/B)-(1/A)}
by equation solving u will get A/B=2/1
so ans is option
(B)
Little Star
n/a
n/a