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Algebra (Practice Problems) / Solving Equations and Inequalities / Applications of Linear Equations   [Notes] [Practice Problems] [Assignment Problems]

Algebra - Practice Problems
Preliminaries Previous Chapter   Next Chapter Graphing and Functions
Linear Equations Previous Section   Next Section Equations With More Than One Variable

 

1. A widget is being sold in a store for $135.40 and has been marked up 7%.  How much did the store pay for the widget? [Solution]

 

2. A store is having a 30% off sale and one item is now being sold for $9.95.  What was the original price of the item? [Solution]

 

3. Two planes start out 2800 km apart and move towards each other meeting after 3.5 hours.  One plane flies at 75 km/hour slower than the other plane.  What was the speed of each plane? [Solution]

 

4. Mike starts out 35 feet in front of Kim and they both start moving towards the right at the same time.  Mike moves at 2 ft/sec while Kim moves at 3.4 ft/sec.  How long will it take for Kim to catch up with Mike? [Solution]

 

5. A pump can empty a pool in 7 hours and a different pump can empty the same pool in 12 hours.  How long does it take for both pumps working together to empty the pool? [Solution]

 

6. John can paint a house in 28 hours.  John and Dave can paint the house in 17 hours working together.  How long would it take Dave to paint the house by himself? [Solution]

 

7. How much of a 20% acid solution should we add to 20 gallons of a 42% acid solution to get a 35% acid solution? [Solution]

 

8. We need 100 liters of a 25% saline solution and we only have a 14% solution and a 60% solution.  How much of each should we mix together to get the 100 liters of the 25% solution? [Solution]

 

9. We want to fence in a field whose length is twice the width and we have 80 feet of fencing material.  If we use all the fencing material what would the dimensions of the field be? [Solution]

 

Problem Pane
Linear Equations Previous Section   Next Section Equations With More Than One Variable
Preliminaries Previous Chapter   Next Chapter Graphing and Functions

Algebra (Practice Problems) / Solving Equations and Inequalities / Applications of Linear Equations    [Notes] [Practice Problems] [Assignment Problems]

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