Classwork to Practice
1) Bruce added 5 boxes of a dozen eggs to 2 boxes of a dozen eggs. How many eggs are being shipped?
Choose the expression that represents the facts of the problem. a-5 + 2 (12) b-5 (12) + 2 c-5 (12) + 2(12)5 d-(12) (2) 2) The Giants added 3 three-point field goals to 4 seven-point touchdowns. What is the score of the Giants? Choose the expression that represents the facts of the problem. a-3 + 7 (7) b-3 + 7 (3) c-3 + 3 + 4 + 7 d-4 (7) + 3 (3) 3) Find the average of 5 test grades: 87, 78, 92, 75, and 81. Choose the expression that represents the facts of the problem. a-87 + 78 + 92 + 75 + 81/58 b-7 (78) (92) (75) (81/5) c-(87 + 78 + 92 + 75 + 81)/5 d-5/(87 + 78 + 92 + 75 + 81) |
4) Astro Paving Co. plans to resurface 10,560 ft of highway in 16 equal sections.
How many feet will be resurfaced in each section? a-660 ft b-168,960 ft c-660 sections d-102.76 ft 5) Ken sold 95 shares of stock for $42.17 per share and 300 shares of another stock for $28.92. How much did he receive from the stock sale? a-$4,006.15 b-$12,682.15 c-$71.09 d-$395 Answers:
1.c 2.d 3.c 4.c 5.b |
Solve applied problems using problem-solving strategies:
Six-Step Problem-Solving Plan
A retailer buys 75 cases of computer paper at $15.35 per case. If each case sells for $20.99, what is his gross profit?
Unknown facts:
Total revenue from sale of paper
Gross profit
Known facts:
75 cases of paper
Cost of $15.35 per case
Selling price of $20.99 per case
Relationships:
Cost = number of cases × cost per case
Total Revenue = number of cases × selling price per case
Gross Profit = Total Revenue – Total Cost
Estimation:
The profit per case is more than $5 per case. $5 (80) = $400. The gross profit should be approximately $400.
Calculation:
Total Cost = number of cases × cost per case
Total Cost = 75 ($15.35)
Total Cost = $1,151.25
Total Revenue = number of cases × selling price per case
Total Revenue = 75 × $20.99
Total Revenue = $1,574.25
Gross Profit = Total Revenue – Total Cost
Gross Profit = $1,574.25 – $1,151.25
Gross Profit = $
- Identify the unknown facts or the question to be answered.
- Identify the known facts.
- Determine the relationship between the known and unknown facts.
- Estimate the answer or the characteristics of a reasonable answer.
- Perform the calculations.
- Interpret the results of the calculations within the context of the problem.
A retailer buys 75 cases of computer paper at $15.35 per case. If each case sells for $20.99, what is his gross profit?
Unknown facts:
Total revenue from sale of paper
Gross profit
Known facts:
75 cases of paper
Cost of $15.35 per case
Selling price of $20.99 per case
Relationships:
Cost = number of cases × cost per case
Total Revenue = number of cases × selling price per case
Gross Profit = Total Revenue – Total Cost
Estimation:
The profit per case is more than $5 per case. $5 (80) = $400. The gross profit should be approximately $400.
Calculation:
Total Cost = number of cases × cost per case
Total Cost = 75 ($15.35)
Total Cost = $1,151.25
Total Revenue = number of cases × selling price per case
Total Revenue = 75 × $20.99
Total Revenue = $1,574.25
Gross Profit = Total Revenue – Total Cost
Gross Profit = $1,574.25 – $1,151.25
Gross Profit = $
Interpretation
The gross profit for the computer paper is $423.
Earning Money - Taxi Driver
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Earning Money - Taxi Driver
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