10. 2 Mixture problems

Jenny wants to make 13 L of a 52% acid solution by mixing together a 56% acid solution and a 43% acid solution. How much of each solution must she use?

• 6 L of 56% solution, 7 L of 43% solution

• 3 L of 56% solution, 10 L of 43% solution

• 9 L of 56% solution, 4 L of 43% solution

• 12 L of 56% solution, 1 L of 43% solution

Tags

CCSS.8.EE.C.8C

How many quarts of a 75% acid solution must be mixed with 3 quarts of a 10% acid solution to make a 60% solution?

• 15 quarts

• 10 quarts

• 9 quarts

• 5 quarts

Tags

CCSS.8.EE.C.7B

At the Golden Oldies Theater, tickets for adults cost $5.50 and tickets for children cost $3.50. There were 21 total tickets purchased for $83.50. How many children tickets were purchased?

(a)  

Tags

CCSS.8.EE.C.8C

Ground chuck sells for $1.75 per pound and ground round sells for $2.45 per pound. How many pounds of ground round should be mixed with 20 pounds of ground chuck to obtain a mixture that sells for $2.05 per pound?

(a)  

Tags

CCSS.HSA.CED.A.1

How many pounds of nuts costing $2.50 per pound should be mixed with 2 pounds of nuts costing $4.50 per pound to obtain a mixture costing $3.00 per pound?

• 6 lb

• 15 lb

• 2 lb

• 1.5 lb

Tags

CCSS.HSA.CED.A.1

3 gallons of a 20% sugar solution is mixed with 5 gallons of a 50% sugar solution. What is the concentration of the mixture?

• 30%

• 40%

• 41.875%

• 38.75%

Tags

CCSS.8.EE.C.7B

100 mL of a 12% saline solution is mixed with 250 mL of an 18% saline solution. What is the concentration of the resulting mixture?

• 14.1%

• 16.3%

• 22.5%

• 18%

Tags

CCSS.8.EE.C.7B

A 20 pound bag of calf starter mix (used to get baby calves to start eating food instead of milk) contains 50% corn. It is mixed with a 30 pound bag that contains 65% corn. What is the concentration of corn in the resulting mixture?

• 55%

• 57%

• 59%

• 61%

Tags

CCSS.8.EE.C.7B

Mrs. Dibble wants to create the perfect grass seed blend to use on her lawn this summer. She mixes a 5 pound bag that is 70% Kentucky Blue Grass with an 8 pound bag that is 50% Kentucky Blue Grass. What is the concentration of Kentucky Blue Grass in Mrs. Dibble's mixture?

• 57.7%

• 55.5%

• 60%

• Who cares? She's going to have a great lawn this summer!

Tags

CCSS.8.EE.C.7B

Bob mixes his 20 ounce protein shake that is 50% milk with 10 more ounces of whole milk. What concentration of milk is in the resulting drink?

• 54.7%

• 55%

• 66.7%

• 80%

Tags

CCSS.8.EE.C.7B