Jack practices his trumpet every 3 days and goes for a run every 4 days if he does both today how many more days will he do both activities

Question

Word problem help. I need help in finding out How many more days will jack practice the trumpet and go for a run on the same day. Please advise

Answer 1

the answer is the least common multiple of both 3 and 4.  That is, ever 12th day Jack will do both.  12 is the lowest number that is divisible by both 3 and 4.