Question

Emelia discovered that if she takes three-fourths of her age and adds 9, it produces the same result as when she takes one-fourth of her age and adds 21. how old is emelia?

Answer 1

24 years old

Explanation:

3/4n +9= 1/4n +21

3/4n-1/4n = 21-9

2/4n = 12

2/4 · 4/2n = 12·4/2

n = 24

Answer 2

I'm assuming 24. I used process of elimination starting from common multiples that could be dovided by 4.