Tax
Discount
Tip
Simple Interest
Find the Interest Rate
100

This is the amount of tax Joe will pay for a $15 shirt with 6% tax.

What is $0.90?

100

The amount of discount on a $30 item with a 25% discount.

What is $7.50

100

Amount of tip for a $55 bill with 20% tip.

What is $11

100

What is the simple interest: I = Prt

Principal:  $600

Rate:  5%

Time: 2 years

$60

100

Find the interest rate:  r = I /Pt

Interest:  $24

Principal:$400

Times: 2 years

What is 3%

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

The amount of discount when MIke bought a $990 computer with a 30% discount.

What is $297

200
Amount of tip for a $15 lunch with 15% tip
What is $2.25
200

What is the simple interest: I = Prt

Principal:  $350

Rate:  3%

Time: 10 years

$105

200

Find the interest rate:  r = I /Pt

Interest:  $54

Principal:$900

Times: 1.5 years

What is 4%

300
This is the total cost of a baseball bat priced at $110 with 6.5% tax.
What is $117.15
300
This is the sale price for an item regularly $65 with a 15% discount.
What is $55.25
300
Total bill for a $60 dinner with 20% tip.
What is $72
300

A savings account earns 5% simple interest per year.  The principal is $1200.  What is the balance after 4 years?

What is $1440

300

You put $400 in an account.  The account earns $18 simple interest in 9 months (.75 years).  What is the annual interest rate?

What is 6%

400
This si the total amount paid for a stereo that costs $59.99 with 7% tax.
What is $64.19
400

This is the final price for an item costing $85.50 with a 20% discount.

What is $68.40

400
Total cost for a $110 dinner with 25% tip!
What is $137.50?
400

What is the balance of the account: I = Prt

Principal:  $1500

Rate:  4%

Time: 5 years

$1800

400

Find the interest rate:  r = I /Pt

Interest:  $720

Principal:$1000

Times: 8 years

What is 9%

500
The percent of tax when Mr. Shirk paid $39.96 TOTAL for an item that was priced at $37. 6% 7% 8% 9%
What is 8%
500
The percent of discount on an item that was $68 and is now $40.80. 20% 25% 30% 40%
What is 40%
500
The percent of tip for a $50 meal if you leave only 5%. 10% 15% 20% 25%
What is 10% tip.
500

What is the balance of the account: I = Prt

Principal:  $700

Rate:  8%

Time: 6 years

50 is 25% of what number?

What is $1036.

500

Find the interest rate:  r = I /Pt

Interest:  $30

Principal:$500

Times: 2 years

What is 3%?

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