Answered

A local bakery celebrated its one-year anniversary on Saturday. On that day, every 4th customer received a free cookie. Every 6th customer received a free muffin. Casey was the first customer to receive both a free cookie and a free muffin. What number customer was Casey?

Sagot :

Find the LCM (Least Common Multiple) of 4 and 6.

Using the listing method:
4 = 4, 8, 12
6 = 6, 12, 18

12  was Casey's number, or Casey was the 12th customer