Question

Pamela is 12 years younger than Jiri. The sum of their ages is 38. What is Jiri's age?​

Answer 1

Jiri's age is 25.

Explanation:

Let P = Pamela's age

and J = Jiri's age. Then

(1) P = J - 12

(2) P + J = 38

Substitute (1) into (2) J - 12 + J = 38

Add 12 to each side J + J = 50

Combine like terms 2J = 50

Divide each side by 2 J = 25

Jiri's age is 25.