SOLUTION: A man is 20years older than his son and the ratio of the ages is 3:8. How old is the son?

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Question 1129039: A man is 20years older than his son and the ratio of the ages is 3:8. How old is the son?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
let son's age be x
if a man is 20 years older than his son, his age is x%2B20
if the ratio of the ages is 3%3A8, than
x%2F%28x%2B20%29=3%2F8
8x=3%28x%2B20%29
8x=3x%2B60
8x-3x=60
5x=60
x=60%2F5
highlight%28x=12%29->son is highlight%2812%29 years old

x%2B20=32->a man's age

check the ratio
12%2F32=3%2F8
cross%2812%293%2Fcross%2832%298=3%2F8
3%2F8=3%2F8