Peter and Paul

Peter and Paul together have 26 years.
Four years ago, Paul was twice older than Peter.
How much is Paul and how much is Peter?

Correct answer:

a =  16
b =  10

Step-by-step explanation:



a+b = 26
a-2b = -4

Row 2 - Row 1 → Row 2
a+b = 26
-3b = -30

b = -30/-3 = 10
a = 26-b = 26-10 = 16

a = 16
b = 10

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