Question

Mary’s number is eleven more than Jerry’s. The sum of their numbers is 89. What are their numbers?

Answer 1

Jerry has a number of 39, and Mary has a number of 50.

Explanation:

Let's say mary's number is x, and jerry's is y.

x-y=11 and y+x=89. This means if we subtract 11 from 89 we get jerry's number times 2, which is 78. 78 divided by 2 is 39.

Jerry has a number of 39

and Mary has a number of 50.