Answer:
54 years old
Explanation:
Because the son is 24 years old, we know that that is 6 times the '4' in the ratio 9:4 therefore if we do 6*9=54 that is the age of his father!
The father is 54 years old
Well from the ratio 9:4
We know the son is 24
we can divide 24/4 to get 6
now we know we have to multiply by 6 on each side of the ratio to get the final result
54:24
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