Linear Relationships % increase & decrease Assignment 7.4(D)

1.     A printer can print posters at a rate of 150 posters in 5 hours. A new printer can produce 175 posters in the same amount of time. What is the percent increase of the new printer?

• 10%

• 20%

• 25%

• 16.67%

Answer explanation

To calculate the percent increase, find the difference in posters produced (175-150=25), then divide by the original amount (150), and multiply by 100 to get 16.67% increase.

Tags

CCSS.6.RP.A.3C

4.     Scott and Michele went out for dinner for their anniversary. The bill for dinner was $75.50. If they left a 20% tip, what was the total amount they paid?

• $85.50

• $80.60

• $95.75

• $90.60

Answer explanation

To calculate the total amount paid, add the bill amount ($75.50) and the 20% tip ($15.10). $75.50 + $15.10 = $90.60. Therefore, the correct total amount paid is $90.60.

Tags

CCSS.6.RP.A.3C

3.     The price of stock was $5.00 per share. Two days later, the price of the stock was $2.25. What is the percent decrease?

• 55%

• 10%

• 40%

• 25%

Answer explanation

To calculate the percent decrease, use the formula: ((Initial Price - Final Price) / Initial Price) * 100. Plugging in the values, we get ((5.00 - 2.25) / 5.00) * 100 = 55% decrease.

Tags

CCSS.6.RP.A.3C

5.     Tucker bought cat food for his 3 cats. The cat food was $50, and Tucker paid $54.25 after tax. What was the percent tax that Tucker paid?

 

• 8.5%

• 10%

• 6.5%

• 7%

Answer explanation

To find the tax percentage, subtract the original price from the final price: $54.25 - $50 = $4.25. Then calculate the percentage: ($4.25 / $50) * 100 = 8.5%.

Tags

CCSS.6.RP.A.3C

Find the value of the expression.

                              15.5(0.08)            

• 1.24

• 1.8

• 1.5

• 1.2

Answer explanation

To find the value of the expression, multiply 15.5 by 0.08, which equals 1.24. Therefore, the correct answer is 1.24.

Tags

CCSS.6.NS.B.3

1.     Ken has 12 blue uniform shirts and 18 grey uniform shirts in storage for new employees. Ken wants to find what percent of the shirts are blue. Which of the following are true?

Select TWO correct answers

• About 67% of Ken’s shirts are blue.

• The proportion  can be used to solve.

• Exactly 40% of Ken’s shirts are blue.

• Exactly 60% of Ken’s shirts are blue.

• The proportion  can be used to solve.

Answer explanation

Choose the correct answers: Exactly 40% of Ken’s shirts are blue. The proportion can be used to solve.