For Rate Problems: If it is OPP, you _____. If it is not OPP, you set _________. 1. ANSWER ADD Equally 2. ANSWER For Work Problems: 3. For Absolute Value Inequalities: If the mouth faces the door _________. ANSWER Its an “Or” For Inequalities: “And” looks like ____________. “Or” looks like ___________. 4. ANSWER Arms Folded Arms Apart

For Rate Problems: If it is OPP, you _____. If it is not OPP, you set _________. 1. ANSWER ADD Equally 2. ANSWER For Work Problems: x = 6/5 ANSWER t = 5 ANSWER

Mixture Problems

A dealer wishes to mix coffee worth 65¢ per pound with coffee worth 90¢ per pound in order to produce 40 pounds of coffee which can be sold at 75¢ per pound. How many pounds of each type should he use? Example 1 These are the largest and smallest numbers This number is between them.

A dealer wishes to mix coffee worth 65¢ per pound with coffee worth 90¢ per pound in order to produce 40 pounds of coffee which can be sold at 75¢ per pound. How many pounds of each type should he use? Example 1, continued

Go back and look at what you were asked for. Then give the answer(s). Example 1, continued

A dealer wishes to mix coffee worth 65¢ per pound with coffee worth 90¢ per pound in order to produce 40 pounds of coffee which can be sold at 75¢ per pound. How many pounds of each type should he use? Example 1, continued We need: 16 pounds of 90¢ coffee 24 pounds of 65¢ coffee

A chemist has one solution which is 30% pure acid and another which is 60% pure acid. How many liters of each should be used to produce 60 liters of a solution which is 50% pure acid. Example 2

A chemist has one solution which is 30% pure acid and another which is 60% pure acid. How many liters of each should be used to produce 60 liters of a solution which is 50% pure acid. Example 2 20 liters of 30% acid 40 liters of 60% acid

How much salt must be added to 80 pounds of a 5% salt solution to make a 24% salt solution? Example 3 saltSalt solution

How much salt must be added to 80 pounds of a 5% salt solution to make a 24% salt solution? Example 3 saltSalt solution 20 pounds of salt

One evening 478 tickets were sold at a local movie. The charges for admission were 85¢ for adults and 50¢ for children. The total receipts for the performance were $ How many adults and how many children attended? Example 4 $ is the total money. We don’t need to multiply 478 by some mixture amount of money to get the total money. It is given to us. $375.50

One evening 478 tickets were sold at a local movie. The charges for admission were 85¢ for adults and 50¢ for children. The total receipts for the performance were $ How many adults and how many children attended? Example 4 $375.50

One evening 478 tickets were sold at a local movie. The charges for admission were 85¢ for adults and 50¢ for children. The total receipts for the performance were $ How many adults and how many children attended? Example 4 $ adults 88 children

Classwork Problem #1 Juan combines 6 liters of a 30% acid solution with a 50% acid solution to obtain a 45% acid solution. How many liters of 50% solution should he use?

Classwork Problem #2 A 35% silver alloy is to be melted with a 65% silver alloy. How many kilograms of each should be used to get 20 kg of a 40% silver alloy?

Classwork Problem #3 A candy dealer sells 5¢ candy bars and 10¢ candy bars. One day he sold 130 bars for which he received $9. How many of each kind did he sell?

Classwork Problem #4 How many quarts of water should be added to 18 quarts of a 75% salt solution to make a 40% solution?

Classwork Problem #5 How many quarts of 55% antifreeze should be mixed with a 10% solution to get 12 quarts of a 25% solution?