state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Time and Work Work Efficiency
A person A can complete a work in 15 days working 8 hours daily. A second person B can complete the same work in 20 days working 7 hours a day. If both A and B work together, working 7 hours a day, then the number of days required to complete that work is
1
8\(\frac{5}{13}\)
2
9\(\frac{3}{13}\)
3
9\(\frac{6}{13}\)
4
10\(\frac{1}{4}\)