If 30 and 12 are factors of K, which of the following is the largest number that must divide evenly into K?
Choose the correct choice.
A) 21
B) 36
C) 90
D) 60
E) 42
In order to solve this, you can calculate the LCM(30,12) (Least common multiple of 30 and 12)   After the calculations you will find that the LCM(30,12)= 60.   You will then check which of the numbers given in the alternatives are divisible by 60 and choose the largest of them.   In this case, the largest divisible number is 60.   Answer 60
<result>D</result>
If 30 and 12 are factors of K, which of the following is the largest number that must divide evenly into K?