Problema Solution
Pamela's 15 years older than jiri. The sum of their ages is 79. What is jiri's age?
Answer provided by our tutors
let
p = the age of Pamela
j = the age of Jiri
Pamela's 15 years older than Jiri:
p = 15 + j
The sum of their ages is 79:
p + j = 79
by solving the system of equations
p = 15 + j
p + j = 79
we find
p = 42 years
j = 37 years
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Jiri is 37 years old.