Answer:
Maggie is 9
Step-by-step explanation:
Let's denote Maggie's age with x and his brother's with y.
First we know that the sum of their ages is 24, so
x+y=24
Then we know that y=2x-3, Maggie's brother (y) is 3 years younger (-3) than twice her age (2x)
Then with these two equations we have
x+y=24
y=2x-3
we can replace y of the second equation into the first and solve for x (Maggie's age)
x+2x-3=24
3x=27
x=9
so we get Maggie's age x=9. Replacing it into the second equation we get her brothers age also y=15.
