Mixture Problems and Linear Systems

Solve the following mixture problem: A chemist has 20 liters of a 30% acid solution. How many liters of a 50% acid solution should be added to obtain a 40% acid solution?

• 10

• 4

• 15

• 2

Tags

CCSS.8.EE.C.7B

A car rental company charges $30 per day plus $0.20 per mile to rent a car. A customer rents a car for 5 days and drives 600 miles. How much will the customer be charged?

• $130

• $90

• $150

• $100

A chemist has 10 liters of a 20% acid solution. How many liters of a 40% acid solution should be added to obtain a 30% acid solution?

• 2 liters

• 15 liters

• 8 liters

• 5 liters

Tags

CCSS.HSA.CED.A.1

A shipping company charges $5 per package plus $2 per pound to ship a package. A customer ships a package that weighs 10 pounds. How much will the customer be charged?

• $15

• $25

• $20

• $30

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Solve the following mixture problem: A chemist has 15 liters of a 25% acid solution. How many liters of a 40% acid solution should be added to obtain a 30% acid solution?

• 5 liters

• 7.5 liters

• 3 liters

• 10 liters

Tags

CCSS.8.EE.C.7B