state gov DSSSB Junior Assistant, Steno and LDC Mock Test 2023 - 24 Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes A and B can fill a container in 12 and 15 minutes respectively. If both the pipes are opened together, but at the end of 3 minutes pipe A is turned off, then in how much time remaining part of the container can be filled?
1
7 minutes
2
\(7\frac{1}{2}\) minutes
3
8 minutes
4
\(8\frac{1}{4}\) minutes