Question

Gabrielle is 10 years younger than Mikhail. The sum of their ages is 40. What is Mikhail's age

Answer 1

A) G +10 = M

B) G + M = 40

A) G -M = -10 Adding A) + B)

2 G = 30

Gabrielle is 15

Mikhail is 25

Explanation:

Answer 2

Mikhail is 25 and Gabrielle is 15

Explanation:

g = (m-10) and g+m = 40

We'll substitute that first equation into the second

(m-10) + m + 40

2m - 10 = 40

2m = 50

m = 25