Aand b working together can do a work in 6 days. if a takes 5 days less than b to finish the work, in how many days b alone can do the work.

15 days

Step-by-step explanation:

Let x be the number of days needed for B to complete the job. Then x-5 is the number of days needed for A to complete the job.

In 1 day,

Hence, in 1 day both A and B complete of all work. A and B working together can do a work in 6 days. Then

Solve this equation:

If then that is impossible. So, B needs 15 days to complete the work alone.

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100