SOLUTION: Mr.Smith has three daughters who go to school.The two daughters aged 6 and 10 years old are given 90.00 and 150.00 per day allowance respectively. Applying the same ratio on the

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Question 951768: Mr.Smith has three daughters who go to school.The two daughters aged 6 and 10 years old are given 90.00 and 150.00 per day allowance respectively. Applying the same ratio on the allowance, how much does he need to give to her 12 years old daughter?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
the 6 year old gets 90 dollars.
the 10 year old gets 150 dollars.
the 12 year old needs to get 180 dollars.

why?

90/6 = 15
150/10 = 15
180/12 = 15 *****

keeps the ratio of money to age the same at 15 to 1.