engineering recuitment ICAR (IARI) Assistant (Pre + Mains) 2022 Mock Test Quantitative Aptitude Time and Work Work Efficiency
A and B can complete a work in 20 days and 30 days respectively. Both of them started working together but after some days A left the work and the whole work will complete in 21 days. Find after how many days A left the job.
1
5 days
2
6 days
3
8 days
4
10 days