Question

aman and Akash can do a piece of work in 12 and 15 days respectively in how many days can they together finish the work​

Answer 1

Akash and aman's 1 day work =1/12+1/15

9/60=60/9

they will finish work in 60/9 days

Answer 2

Aman 1day work=1/12    Akash 1day work=1/15  (aman +akash)1day work=1/12+1/15=5+4/60=9/60=3/20       so total work done in 20/3days   answer=20/3