posted by Babiibun .
N and M have annual savings of $15.00 and $20.00 respectively. When did they have the same saving amount? If N and M started his job in 2000 and 2002 namely.
They will have the same amount of $120 ( the LCM of 15 and 20).
This will take N 120/15 or 8 years
Can you take it from there?