When setting up proportions, be sure to be consistent. Units for the numerators should be the same and units for the denominators should be the same as well.

**Proportion Problem:**If 2 out of 3 dentists prefer Crest toothpaste, how many prefer Crest out of 600 dentists surveyed?

**Proportion Problem:**In Visalia 3 out of every 7 voters said yes to proposition 40. If 42,000 people voted, how many said no to proposition 40?

**Proportion Problem:**A recipe calls for 5 tablespoons of sugar for every 8 cups of flour. How many tablespoons of sugar are required for 32 cups of flour?

**Coin Problem:**Sally has 12 coins consisting of quarters and dimes. The value adds to $2.25. How many of each coin does she have?

**Mixture Problem:**A 50% alcohol solution is mixed with a 10% alcohol solution to create 8 ounces of a 32% alcohol solution. How much of each is needed?

**Interest Problem:**Mary invested her total savings of $3,400 in two accounts. Her mutual fund account earned 8% interest last year and her CD earned 5%. If her total interest for the year was $245, how much was in each account?

**Video Examples on YouTube:**

J. Redden on G+