Textbook+Questions+8.5


 * Using Equations to Solve Problems **

1. Find the following numbers. a). When it is increased by 5, the result is 11. b). When it is divided by 3, the quotient is 5. c). The product of 4 and itself is 12. d). The difference between itself and 8 is 2. e). When it is subtracted from 18, the result is 8.

2. The formula for the area of a rectangle is A = l x w a). The area of the rectangle is 63 cm². If its width is 7 cm, what is its length? b). If the area of the rectangle is increased to 72 cm², but its length remains the same, what is its new width?

3. A Cal Ripken baseball card sells for $18.50. This is $11.75 more than a Joe Carter card. What is the cost of a Joe Carter card?

4. Soula bought 2 new skirts for school. One cost $10.00 more than the other. If the cost of the more expensive skirt was $40.00, what was the cost of the other skirt?

5. The sum of 2 numbers is 24. One number is 3 times as great as the other. What are the 2 numbers?

6. The difference between 2 numbers is 36. The larger number is 4 times as great as the smaller. What are the two numbers?

7. At the Summer Olympics in Barcelona, Spain, the Australian team won 9 medals more than the Canadian team. If Australia won 27 medals, how many medals did Canada win?

8. At the Winter Olympics in Lillehammer, Norway, Canadians won twice as many silver medals as gold medals. Canadians won a total of 9 silver and gold medals. How many gold medals did they win?

9. In July, the average mid-afternoon temperature in Vancouver is 4.6°C lower that the average mid-afternoon temperature in Regina. If the average for Vancouver is 21.7°C, what is the average for Regina?