Answer:
18
Step-by-step explanation:
Divide 12 by 4 and get 3.
If we add 3 to 12(which would be 15), we would get the total amount of younger cousins.
If you divide 15 by 5 (since there are 5x more), you will get 3.
So... there are 3 older cousins...
Now, there are 15 younger cousins and 3 older cousins.
15 + 3 = 18
Therefore, Jerry has 18 cousins altogether.
-kiniwih426
