engineering recuitment Vizag Steel MT Mechanical 2020 Test Series Quantitative Aptitude Time and Work Work Efficiency
Two pipes P and Q can fill a tank in 40 minutes and 30 minutes respectively. Both pipes are opened simultaneously and after 10 minutes pipe Q is closed. In what time after this will the tank get filled up?
1
16 minutes 40 seconds
2
16 minutes
3
15 minutes
4
15 minutes 20 seconds