Question

Q3. If A can do a piece of work in
15 days and B can do it in 20
days, their 1 day's work equal to​

Answer 1

Answer:

MARK AS BRAINLIEST

Step-by-step explanation:

A can do a work in=15 days. B can do the same work in = 20 days. So in 1- day both can do=1/15 +1/20 =7/60 the work. In 4- days both can do=(7/60) x 4 =7/15 the work.