IBPS RRB Office Assistant 13 Aug 2023 Shift 2 Paper

Question : 48 of 80

Marks: +1, -0

A and B can complete a work in 20 days and 30 days respectively. If A and B start working together but after some time B left the work because of which the whole work was completed in 16 days. Find the time after which B left the work?