Question

the person A can do a work in 5 days and person B can do it in 8 days . In how many days will they do it together ? ​

Answer 1

Answer:

they both can do it in 1\13 ,days

Answer 2

Step-by-step explanation:

First, let’s find the rates at which A and B complete the work. This can be found with the formula:

Work/Time

A takes 5 days to finish 1 “work”, and B takes 10 days to finish 1 “work”. So, we find:

A’s rate = 1/5 work per day

B’s rate = 1/10 work per day

We want to find the rate at which A and B are working together. By adding the individual rates, we get:

A and B’s rate = 1/5 work per day + 1/10 work per day = 3/10 work per day

Since they get 3/10s of the work done each day, in total it will take:

1/(3/10) = 10/3 days to complete work, or 3 1/3 days, or if they ask you to round to the nearest tenth (for example), 3.3 days.