# + Homework 0.45(800) = % 50% = 45% a b a 0.50b 360

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+ Homework 0.45(800) = 360 30% 50% = 45% a b 800 0.30a 0.50b 360
#1 Jenny mixes a 30% saline solution with a 50% saline solution to make 800 milliliters of a 45% saline solution. How many milliliters of each solution does she use? a = amount of 30% saline solution 0.45(800) = 360 b = amount of 50% saline solution 30% + 50% = 45% solution solution solution Amount of Solution a b 800 Saline 0.30a 0.50b 360

200 ml of 30% solution 600 ml of 50% solution Homework
#1 Jenny mixes a 30% saline solution with a 50% saline solution to make 800 milliliters of a 45% saline solution. How many milliliters of each solution does she use? a = amount of 30% saline solution b = amount of 50% saline solution 200 ml of 30% solution 600 ml of 50% solution

Homework #2 Peanuts cost \$1.60 per pound and raisins cost \$2.40 per pound. Brad wants to make 8 pounds of a mixture that costs \$2.20 per pound. How many pounds of peanuts and raisins should he use? P = amount of peanuts (lbs.). 2.20(8) = 17.60 R = amount of Raisins (lbs.) + Peanuts Raisins = Mixture Amount (lbs) P R 8 Cost (\$) 1.60P 2.40R 17.60

2 pounds of Peanuts 6 pounds of Raisins Homework
#2 Peanuts cost \$1.60 per pound and raisins cost \$2.40 per pound. Brad wants to make 8 pounds of a mixture that costs \$2.20 per pound. How many pounds of peanuts and raisins should he use? P = amount of peanuts (lbs.). R = amount of Raisins (lbs.) 2 pounds of Peanuts 6 pounds of Raisins

+ Homework 0.16(10) = 1.6 10% 25% = 16% a b 10 0.10a 0.25b 1.6
#3 A pharmacist wants to mix medicine that is 10% aspirin with a medicine that is 25% aspirin to make 10 grams of a medicine that is 16% aspirin. How many grams of each medicine should the pharmacist mix together? a = amount of 10% aspirin 0.16(10) = 1.6 b = amount of 25% aspirin + 10% 25% = 16% Amount of medicine a b 10 aspirin 0.10a 0.25b 1.6

6 grams of the 10% aspirin 4 grams of the 25% aspirin Homework
#3 A pharmacist wants to mix medicine that is 10% aspirin with a medicine that is 25% aspirin to make 10 grams of a medicine that is 16% aspirin. How many grams of each medicine should the pharmacist mix together? a = amount of 10% aspirin b = amount of 25% aspirin 6 grams of the 10% aspirin 4 grams of the 25% aspirin

Homework #4 A coffee shop plans on selling it’s house blend for \$8.50 per pound. The mix will be made from Mexican beans that cost \$7 per pound, with Costa Rican beans that cost \$9 per pound. How many pound of Costa Rican beans are needed to make 150 pounds of the house blend? M = amount of Mexican beans (lbs.). 8.50(150) = 1275 C = amount of Costa Rican beans (lbs.) + Mexican Costa Rican = Blend Amount (lbs) M C 150 Cost (\$) 7M 9C 1275

Homework #4 A coffee shop plans on selling it’s house blend for \$8.50 per pound. The mix will be made from Mexican beans that cost \$7 per pound, with Costa Rican beans that cost \$9 per pound. How many pound of Costa Rican beans are needed to make 150 pounds of the house blend? M = amount of Mexican beans (lbs.). C = amount of Costa Rican beans (lbs.) 112.5 pounds of Costa Rican beans

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