other govt exam CSIR Junior Secretariat Assistant (JSA) 2025 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes A and B can fill a tank in 16 hours and 20 hours respectively. They are opened alternatively for 1 hour each. Starting with pipe A first. In how many hours with the empty tank be filled?
1
\(17\frac{1}{5}\)
2
\(17\frac{3}{4}\)
3
\(17\frac{3}{5}\)
4
\(17\frac{1}{{14}}\)