BANK IBPS RRB Clerk 2025 Mock Test Series (Pre + Mains) Quantitative Aptitude Time and Work Work Efficiency
A can do a piece of work in 20 days while B can do the same work in 30 days. If both worked for 4 days, then the fraction of work left is
1
6/7
2
7/6
3
1/9
4
2/3
5
3/2