Question

Maggie's brother is 4 years younger than four times her age. The sum of their ages is 71.

How old is Maggie?
Maggie is
years old.

Answer 1

Heya there!

Here's the answer to your question.

Maggies age = M

Brothers age = B

From the problem develop 2 equations:

B = 2M - 4 Equation 1

M + B = 11 Equation 2

Solve Eq. 2 for B to get: B = 11 - M then substitute into Eq. 1.

11 - M = 2M - 4

-3M = -15

M = 5 Maggie is 5 years old!

Explanation: