Posted by **Anonymous** on Monday, November 28, 2011 at 6:29pm.

The sum of three numbers is 81 and their ratio is 3:7:17. What is the value of the smallest number?

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**MathMate**, Monday, November 28, 2011 at 6:35pm
Add up the ratios 3:7:17 to get 27.

Since ratios can be scaled, we can scale the ratios to have a sum of 81 by multiplying the ratios by 3,i.e.

3:7:17 ≡ 9:21:51.

Can you take it from here?

- math -
**Anonymous**, Monday, November 28, 2011 at 7:01pm
no i need the answer please

- math -
**MathMate**, Monday, November 28, 2011 at 7:35pm
Try to add up the three numbers 9,21 and 51 and see what you get.

You're welcome to confirm your answer if you are not sure.

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