SOLUTION: The ratio of Johns age to Jills age is 3:5. John is 12 years old. How old is Jill?

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Question 1080125: The ratio of Johns age to Jills age is 3:5. John is 12 years old. How old is Jill?
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
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12%2Fx = 3%2F5   ====>  x = %2812%2A5%29%2F3 = 20

Answer. Jill is 20 years old.