Answer:
47.5 + 73.5 = 121
Explanation:
If two numbers are going into 121, then you divide 121 by 2. This gives you 60.5 + 60.5 = 121. Since one of the numbers is 13 less than the other number, then you take one of the 60.5s and subtract 13 from it, giving you 60.5 + 47.5 = 108. To get this to equal 121 again, you add 13 to the other number, giving you 73.5 + 47.5 = 121.