7.4D Proportions Readinessss

A bicycle shop designs a new gear system for their bikes. They use a 4-inch gear for bikes with a 22-inch wheel diameter. If the ratio of the gear to wheel diameter remains constant, what is the size of the gear for a bike with a 26-inch wheel?

• 4.5 inches

• 4.7 inches

• 5.2 inches

• 4.9 inches

Seventy-five percent of the girls in Ms. Thompson's class own a smart phone compared to 62.5% of the boys. If there are 20 girls and 8 boys in Ms. Thompson's class, how many students own a smart phone?

• 22 students

• 18 students

• 20 students

• 24 students

Eli's Electronics has a 60-inch television on sale this week for $798. The television is regularly priced for $1,050. By what percent did the price of the television decrease?

• 24%

• 28%

• 32%

• 25%

Marina's bill for dinner totals $38.65, including tax. She leaves a 20% tip. If she pays with a $100 bill, how much change will Marina receive?

• $59.35

• $61.35

• $70.65

• $53.62

During a field trip to a local soda manufacturing plant, students watched as 12 sodas were dispensed in 1.5 minutes. At this rate, how many minutes will it take to dispense 12 dozen sodas?

• 18 minutes

• 3 minutes

• 9 minutes

• 12 minutes

Munson's Sporting Goods purchases bowling balls from the manufacturer for a wholesale price of $65 each. The retail price of the bowling balls reflects a 60% increase over the wholesale price. What is the retail price of a bowling ball?

• $104

• $110

• $130

• $1040

Shelby purchased a coat for $101.50 that was regularly priced at $145, not including tax. What percent did Shelby save by purchasing the coat on sale?

• A) 70%

• B) 25%

• C) 30%

• D) 43%

An 8-ounce cup of gourmet coffee costs $4.50. If the unit price remains the same, how much would 3 quarts of coffee cost?

Hint: 1 quart = 32 ounces

• A) $18.00

• B) $27.00

• C) $36.50

• D) $54.00

Tan's electricity bill for the month of August was $267.00. His September bill showed a 2% increase from his August bill. In October, his bill decreased 8% from the amount he was billed in August. How much did Tan spend on electricity over the three-month period?

• A) $800.94

• B) $774.30

• C) $827.70

• D) $784.98

Holly and her 2 best friends go to dinner. Their total bill is $31.84. They use a coupon for 15% off the total. If they split the bill evenly, how much money will each person owe, to the nearest cent?

• A) $8.84

• B) $10.61

• C) $9.02

• D) $12.21