Julia goes running every 4 days and weight lifts every 3 days. How many days until she will run and lift on the same day?
a
4 days
b
3 days
c
7 days
d
12 days
The least common multiple of 3 and 4 is 12. Therefore, Julia will run and lift on the same day every 12 days.
So the correct answer is:
d
12 days