state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Time and Work Work Efficiency
A work may be completed in 10 days, if x, y and z work together. All three started work together. x left after 4 days, then y and z completed the remaining work by taking 10 more days. In how many days could x complete the whole work alone?
1
25 days
2
35 days
3
30 days
4
28 days