Answer:
M=3/4J or J=4/3M
Step-by-step explanation:
3:4, 9:12, and 15:20 are ratios that are equal to each other.
If you multiply 3:4 by 3 you get 9:12 and if you multiply it by 4 you get 15:20
another way to check is to plug the numbers in.
3 is 3/4 of 4
9 is 3/4 of 12
15 is 3/4 of 20
so the equation is true
