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Worksheet: Increasing and Decreasing by a Percentage

Q1:

A neighborhood of 12 houses puts out 84.9 pounds of garbage every week. Given that there was an agreement to decrease the neighborhood’s total garbage weight by , determine how much garbage should be thrown away by each household next week.

Q2:

A neighborhood of 11 houses puts out 71.5 pounds of garbage every week. Given that there was an agreement to decrease the neighborhood’s total garbage weight by , determine how much garbage should be thrown away by each household next week.

Q3:

A neighborhood of 16 houses puts out 57.6 pounds of garbage every week. Given that there was an agreement to decrease the neighborhood’s total garbage weight by , determine how much garbage should be thrown away by each household next week.

Q4:

Nancy wants to buy a new backpack which is advertised at $48. Sales tax of must be added to this amount. How much sales tax will she pay?

Q5:

Brandon wants to buy new rollerblades. The price of a pair of rollerblades is $78, and the sales tax is . Determine the total cost of the rollerblades.

Q6:

Larry wants to buy new rollerblades. The price of a pair of rollerblades is $69, and the sales tax is . Determine the total cost of the rollerblades.

Q7:

Victor wants to buy new rollerblades. The price of a pair of rollerblades is $82, and the sales tax is . Determine the total cost of the rollerblades.

Q8:

On a trip to New York, a tourist bought five souvenir mugs for $7.23 each. Given that the sales tax was , determine, to the nearest cent, the total amount he paid.

Q9:

On a trip to New York, a tourist bought six souvenir mugs for $2.30 each. Given that the sales tax was , determine, to the nearest cent, the total amount he paid.

Q10:

A clothing store is having a sale of . Determine, to the nearest cent, the cost of four pairs of pants that regularly cost $23.99.

Q11:

Determine the profit Arthur made in a year from depositing $490 000 in a savings account with an annual interest rate of .

Q12:

Determine the profit Adam made in a year from depositing $370 000 in a savings account with an annual interest rate of .

Q13:

Dana bought new clothes for $360 for a new job using a credit card with an interest rate of . Determine the amount of money she will owe the bank if she makes no other charges on the card and does not pay off the balance at the end of the month.

Q14:

Heather bought new clothes for $210 for a new job using a credit card with an interest rate of . Determine the amount of money she will owe the bank if she makes no other charges on the card and does not pay off the balance at the end of the month.

Q15:

Determine, to the nearest cent, the total price of an inflatable dolphin that costs $5.09 if the sales tax is .

Q16:

A microwave oven costs $220, not including the sales tax, and a store in South Dakota has a microwave on sale for off. If the sales tax is calculated after the discount, what is the cost of the microwave?

StateMaineNorth VirginiaSouth Dakota
Sales Tax Rate

Q17:

An electronics store had a one-day sale of . Given that, on the following day, the sale price was increased by , determine, to the nearest cent, the price of a pair of headphones that originally cost $216.

Q18:

Katie wants to buy a new backpack which is advertised at $62. Sales tax of must be added to this amount. How much sales tax will she pay?