Percent Change
Tax/Tip
Discount
Interest/Commission
Challenge
100

 Ann works in a supermarket for $10.00 per hour. If her pay is increased to $12.00, then this is her percent increase in pay

20% increase

100

How much tip should you leave on $45 bill if you want to tip 15%.

What is $6.75?

100

How much do you save on a pair of boots that are 20% off but regularly cost 187.50?

What is $37.50?

100

What would the interest be on a principal of $200 at an interest rate of 3% over 2 years?

$12

100

How much would you pay for an item that originally cost $15 but was on sale for 13% off and you paid 5.5% sales tax on?

$13.77

200

The staff at a company went from 40 to 29 employees. THis is the percent decrease in staff

27.5%

200

Sales tax in Georgia is 4%. How much tax would you expect on a purchase of $148.72? (Round to the nearest cent)

What is $5.95?

200

How much would a pair of jeans cost after a 25% discount? The jeans are originally $34.99. (Round to the nearest cent)

What is $26.24?

200

How long has your money been in the bank if you started with $12,000 and have earned $1800 at a 3% interest rate?

5 years

200

You go out to dinner with 3 friends.  The bill comes to $56 and you want to leave a 20% tip.  If you split the bill equally, how much does each person pay?

What is $16.80?

300

At a supermarket, a certain item has increased from 75 cents per pound to 81 cents per pound. This is the percent increase in the cost of the item

8%

300

You tip $13 at a restaurant which was 18% of the bill. What was the bill? (round to the nearest cent)

What is $72.22?

300

You buy a ukulele for $15 off the regular cost which was a 30% discount. How much does the ukulele cost when it is not on sale?

What is $50?

300

How much commission would you make if you earn 5.5% on a sale of $140?

What is $7.70

300

The restaurant you eat at also has a gift shop area.  Your meal cost $26 and you pay the waiter 17% tip.  You also buy some items at the gift shop totalling $19 and you have to pay 6% sales tax on that.  How much do you pay in all?

What is $50.56?

400

In a small town, there was an 28% increase in the population from 1990 to 2000. If there were 25,000 people in 1990, what was the population in 2000.

32,000

400

You and 2 friends eat at Olive Garden and your bill is $50.50. You decide to leave a 20% tip. How much do you each pay?

What is $20.20?

400

The price of a t-shirt is 5$. If you buy 4 shirts, you will get 10% discount. How much do you have to pay if you buy 8 shirts?

What is $36?

400

Joe earns a base salary of $30,000 per year plus a commission of 6% on all sales he makes. What was his total sales if he made $31,200 last year?

What is $20,000?

400

What was the original price of a bike if you paid $103.35 after a 25% discount and 6% sales tax?

What is $130? 
500

Stock in Company XYZ decreased 60%.  If the stock is worth $48 now, how much was it worth before?

$120

500

You get your hair cut and decide to buy some new products while you are there.  It costs you $30 for the haircut and you want to leave a 15% tip, and the products cost $20 and you need to pay 6% sales tax.  How much do you end up spending?

$55.70

500

On the day after Halloween all candy is marked 60% off.  You buy 10 bags and spend $12.  How much was each bag before the discount?

What is $3?

500

A parent wants to have $60,000 in order for their child to go to college in 15 years.  How much do they need to invest in an account that earns 6.5% interest?

What is $30,380?

500

How much do you need to invest in an account that pays 6% interest if at the end of 10 years you want to be able to afford to buy a car that cost $32,000 plus 5% sales tax?

What is $21,000?