

1. 
Find the least common multiple of 6 and 15. 


A. 
30 
B. 
3 


C. 
60 
D. 
15 


Hint 


2. 
What is the least common multiple of 4, 5, and 16? 


A. 
80 
B. 
64 


C. 
16 
D. 
160 


Hint 


3. 
Find the least common multiple of 6, 8, and 10. 


A. 
120 
B. 
140 


C. 
86 
D. 
240 


Hint 


4. 
Rachel and Diego both jog regularly. Rachel jogs every other day, and Diego jogs every third day. They both jogged today. How many days will it be before they both jog on the same day again? 


A. 
3 
B. 
12 


C. 
2 
D. 
6 


Hint 


5. 
Marquez is on a certain baseball team that has a fourman pitching rotation, so each pitcher plays every four days. Walter is on another team, which has a fiveman rotation. If Marquez and Walter play in the same game today, how many days will it be before they play on the same day again? 


A. 
5 
B. 
4 


C. 
10 
D. 
20 


Hint 


