engineering recuitment DDA JE Civil 2023 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
A cistern can be filled by one tap in 15 hours, and by another in 17 hours How long will it take to fill the cistern if both taps are opened together?
1
255/32 hours
2
349/21 hours
3
242/27 hours
4
431/12 hours