Emily is 4 years older than Grace. When their ages are added together, they are equal to 26. How old is Emily?

Answer 1

emily is 15

grace 11

sum = 26

difference = 4

divide 26 by 2, get 13, then add and subtract 4/2 =2 to get 11 and 13

or more traditional method is

g+e = 26

e - g = 4

solve by substitution elimination or matrix algebra

add the 2 equations to get

2e = 30

e = 30/2 =15