1. 3. 6 Problem Solving: Using Charts & 3
3.6 Problem Solving: Using Charts & 3.7 Cost, Income, and Value Problems
Objective: To organize the facts of a problem in a chart and to solve problems involving cost, income, and value.
Warm – up: Complete the chart. One board is 4 inches wide and 8 inches longer than another board that is 2 inches wide.
Width
Length
1st board
2nd board

2. 3.6 Problem Solving: Using Charts
Setting up charts and solving…
The length of a rectangle (rectangle 1) is twice its width w. A second rectangle (rectangle 2), which is 8 cm longer and 3 cm narrower than the first rectangle, has perimeter 154 cm. Find the dimensions of each rectangle.
Carrie has 40 more nickels than Joan has dimes. They both have the same amount of money. How many coins does each girl have?
width
length
perimeter
Rectangle 1
Rectangle 2
No. of Coins
Value per Coin
Total Value
Carrie
Joan

3. 3.7 Cost, Income, and Value Problems
Setting up charts and solving…
Tickets for the senior class play cost $6 for adults and $3 for students. Total of 846 tickets worth $3846 were sold. How many student tickets were sold?
An apple sells for 25 cents and a peach sells for 15 cents. A total of 10 pieces of fruit were sold for a total cost of $2.10. How many apples were sold?
Price per Tix
Number of Tix
Total Cost
Students
Adults
Price per Fruit
Number of Fruit
Total Cost
Apple
Pear

4. 3.7 Cost, Income, and Value Problems
Setting up charts and solving…
Marlee makes $5 an hour working after school and $6 an hour working on Saturdays. Last week she made $64.50 by working a total of 12 hours. How many hours did she work on Saturday?
Ernesto purchased 100 postage stamps worth $9.90. Half of them were 1₵ stamps, and the rest were 14₵ and 22₵ stamps. How many 22₵ stamps did he buy?
Wage per Hr
Number of Hrs
Total Income
Saturdays
Weekdays
Price of Stamp
No. of Stamps
Total Cost
1₵ Stamp
14₵ Stamp
22₵ Stamp

5. 3.7 Cost, Income, and Value Problems
Homework:
Pg. 123 Problems #8
Pg. 127 Problems #1 – 6