Alfonso is 20 years older than Kendra. Seven years ago, the sum of their ages was 54. How old are they now?
Alfonso's age=x
Kendra's age=y
y+20=x
(x-7)+(y-7)=54
x+y=68
x-y=20
2x=88
x=44
y+20=44
y=24
Kendra is 24 while Alfonso is 44
