Answer:
C)90
Step-by-step explanation:
Common multiples are numbers that each number can be multiplied to make.
45 / 6 = 7.5 so, 45 is not an answer
45 does not go into 51
45 X 2 = 90 , 90 / 6 = 15
90 can be an answer
120/45 = 2.6666.... Not an answer
