Tax/Discount
Ratios and Proportions
Tip/Discount
Literal Equations
% of Change/D=RT
100
This is the final price for an item costing $85.50 with a 20% discount.
What is $68.40
100

5/8 = n/ 48


What is n=30?

100
Amount of tip for a $55 bill with 20% tip.
What is $11
100

Solve m - n = 5 for m

m = 5 + n

100

5 cups to 8 cups

What is 60% increase

200
This is the amount of tax Sarah will spend on a sweater that costs $27 with a 7% tax.
What is $1.89?
200

3/8 = n/20


7.5

200
The amount of discount on a $30 item with a 25% discount.
What is $7.50
200

Solve 2a + 2b = c for b

b = c - 2a 2

(c-2a)/2

200

There were 75 students in an art class last Friday.  This Friday, there are 15 students.  What was the percent of change?

What is 80% decrease

300
This is the total cost of a baseball bat priced at $110 with 6.5% tax.
What is $117.15
300

A 4-ft. tall mailbox casts a 2-ft. long shadow. If the shadow of a nearby tree is 16 ft. long, find the height of the tree.

What is 32 ft.?

300
Total cost for a $110 dinner with 25% tip!
What is $137.50?
300

solve FOR x, x/5 - g = a

x = 5(a + g)

300

Yesterday your bus ride to school took 8 minutes. Today because of the snow, the bus ride took 10 minutes. What is the percent of change?

What is 25% increase

400
The amount of discount when MIke bought a $990 computer with a 30% discount.
What is $297
400

If you can buy 24 eggs for $8.64, what is the price for 7?

What is $2.52?

400
The wholesale price of the skateboard was $70. The markup of the skateboard is 125%. What is the new price?
$157.50
400

Solve a=46c for c and evaluate for a=322

c=a/46 c=7

400

pg 135 #5

2 hours

500

The percent of discount on an item that was $68 and is now $40.80. Choose one: 20% 25% 30% 40%

What is 40%

500

3/(x + 2) = 5/8

24 = 5x + 10

14 = 5x

14/5 = x

500

The percent of tip for a $50 meal if you leave only $5. Choose one: 10% 15% 20% 25%

What is 10% tip.

500

Solve 3.3x + r = 23.1 for x

x = 23.1 - r 3.3

500

pg 136 #14

5 hours

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