Question

2 persons can finish a job in 8 days. First person alone can finish the work in 24 days. How many days does the second person take to finish the job?

Answer 1

lcm is 48
total work done by two persons is 48/8= 6 units per day
work done by first person is 48/24= 2 units / day
work done by second is 6-2 is 4 units per day
days taken by second person = 48÷ 4 = 12 days