Question

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

Related Questions

Sense someone keeps deleting it 2 Why did the judges accuse Joan of being a witch and a blaspheme... I'm really struggling with questions about Joan of Arc! I have a worksheet to answer about the 1999... Are these correct?: -France is fighting England and they are being helped by the Burgundians righ... Michelle is 7 years older than her sister Joan, and Joan is 3 years younger than their brother Ryan....