Pamela is 11 years old than jiri. The sum of their ages is 79. What's is jiri s age?

Question

Pamela is 11 years old than jiri. The sum of their ages is 79. What's is jiri s age?

Answer 1

Hi Mark:

 

From information given choose variables and set up 2 equations.

Let P = Pamela's age

Let J = Jiri's age

 

P = J + 11

P + J = 79

 

Using substitution replace P with J+11 in 2nd equation to solve for J:

 

J + 11+ J = 79

2J + 11 = 79

2J = 68

J = 34 years old for Jiri

 

P = J + 11 = 45 years old for Pamela