state gov Karnataka Police Constable Mock Test 2025 Quantitative Aptitude Time and Work Pipe and Cistern
A cistern can be filled by pipe G in 15 hours. If pipe H when opened alone empties the cistern in b hours and together pipes G and H can empty the full cistern 10 hours, find the value of b.
1
5 hours
2
6 hours
3
15 hours
4
25 hours