Answer:
Maggie =11
her brother= 34
Step-by-step explanation:
let the unknown be x
age of Maggie's brother: 4x-10
sum of their ages= 45
their ages=
4x-10+x =45
4x + x = 45 +10
5x = 55
x = 55/5
x= 11
age of maggie= 11
age of her brother = 4 × 11 - 10 = 34