# Word Problems

## Mixture Question

A farmer wants to mix milk containing 3% buttermilk with cream containing 30% butterfat to obtain 900 gallons of milk which is 8% butterfat. How much of each must he use?

## Dilute a Solution

Marie has 25 ounces of a 20% boric acid solution which she wishes to dilute to a 10% solution. How much water does she have to add to obtain a 10% solution?

## Increase Concentration

How much pure alcohol must a nurse add to 10 liters of 60% alcohol to strengthen it to a 90% solution? a) 25 liters b) 30 liters c) 40 liters d) 32 liters e) 60 liters

## Mixing Ingrediants

A store wants to mix two grades of coffee. One sells for $.80 per pound and one sells for $1.20 per pound. He wants to sell the mixture for $1.10 per pound. If he has 25 pounds of the $.80 per pound coffee, how much of the $1.20 must he use.