Johnny is seven years older then his little sister. let j represent jonny's age and s represent his sister

Question

Geography

Gilberto Ho

10 September, 07:34

Johnny is seven years older then his little sister. let j represent jonny's age and s represent his sister

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Answers (1)

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Andrea · Answer 1

Well to find this out you need to make an equation

s+7=j

So for example if Johnny's sister is 15 then Johnny would be 22 because

s (sister's age) + 7 (number of years difference between their ages) = 22 (Johnny's age)