Asked by Rabie

Joan is three years younger than Martin. How old will Joan be when she is 4/5 his age?

Answers

Answered by Henry
Martin is X yrs. old.
Joan is (x-3) yrs. old.

4x/5 = x-3
Multiply both sides by 5:
4x = 5x-15
X = 15

(4/5) * 15 = 12 yrs. = Joan's age.

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