Pamela is 6 years younger than Jiri. The sum of their ages is 78 . What is Jiri's age?

1 answer:

6 0

Let’s make

P = Pamela
J = Jiri

J - 6 = P

P + J = 78

We can replace P with J - 6 because they are the same thing.

J - 6 + J = 78

2J - 6 = 78

2J = 84

J = 42

Jiri is 42 years old.

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