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# 3.4E: Exercises

• • OpenStax
• OpenStax
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## Practice Makes Perfect

Solve Coin Word Problems

In the following exercises, solve each coin word problem.

Mukul has $3.75 in quarters, dimes and nickels in his pocket. He has five more dimes than quarters and nine more nickels than quarters. How many of each coin are in his pocket? Answer 16 nickels, 12 dimes, 7 quarters ### Exercise $$\PageIndex{18}$$ Vina has$4.70 in quarters, dimes and nickels in her purse. She has eight more dimes than quarters and six more nickels than quarters. How many of each coin are in her purse?

Solve Ticket and Stamp Word Problems

In the following exercises, solve each ticket or stamp word problem.

Hilda has $210 worth of$10 and $12 stock shares. The numbers of$10 shares is five more than twice the number of $12 shares. How many of each does she have? Answer 15$10 shares, 5 $12 shares ### Exercise $$\PageIndex{32}$$ Mario invested$475 in $45 and$25 stock shares. The number of $25 shares was five less than three times the number of$45 shares. How many of each type of share did he buy?

Solve Mixture Word Problems

In the following exercises, solve each mixture word problem.

## Writing Exercises

### Exercise $$\PageIndex{47}$$

Suppose you have six quarters, nine dimes, and four pennies. Explain how you find the total value of all the coins.

### Exercise $$\PageIndex{48}$$

Do you find it helpful to use a table when solving coin problems? Why or why not?

### Exercise $$\PageIndex{49}$$

In the table used to solve coin problems, one column is labeled “number” and another column is labeled “value.” What is the difference between the “number” and the “value?”

### Exercise $$\PageIndex{50}$$

What similarities and differences did you see between solving the coin problems and the ticket and stamp problems?

## Self Check

ⓐ After completing the exercises, use this checklist to evaluate your mastery of the objectives of this section. ⓑ After reviewing this checklist, what will you do to become confident for all objectives?

3.4E: Exercises is shared under a not declared license and was authored, remixed, and/or curated by OpenStax.