Automotive Math Quiz

How many hours did Bob work this week?

• 34 hours

• 40 hours

• 30 hours

• 36 hours

Answer explanation

Bob worked 34 hours this week, which is the correct choice among the options provided. The other choices do not match the total hours he worked.

What is the formula used to calculate the added cost for profit in the example?

• $450 x 10%

• $450 x 15%

• $450 x 20%

• $450 x 25%

Answer explanation

The added cost for profit is calculated by multiplying the base amount of $450 by the profit percentage. In this case, 15% is the correct percentage to use, resulting in the formula $450 x 15%.

What is the purpose of adding an upcharge to parts in a repair shop?

• To decrease costs

• To increase profits

• To attract customers

• To improve quality

Answer explanation

The purpose of adding an upcharge to parts in a repair shop is primarily to increase profits. This additional charge helps cover overhead costs and contributes to the overall financial health of the business.

What is the total percentage cost to the customer after adding the profit margin?

• 100%

• 110%

• 115%

• 120%

Answer explanation

To find the total percentage cost to the customer after adding the profit margin, we add the base cost (100%) to the profit margin (15%). Thus, 100% + 15% = 115%, making the correct answer 115%.

What is the final cost to the customer after adding the profit margin in Jim's example?

• $500.00

• $517.50

• $525.00

• $550.00

Answer explanation

In Jim's example, the profit margin added to the base cost results in a final cost of $517.50. This is calculated by taking the base cost and applying the specified profit margin.

An auto parts store pays $125.00 for an alternator. They mark up all parts 38% for retail sales. What is the retail price of the alternator?

• $172.50

• $150.00

• $175.00

• $160.00

Answer explanation

To find the retail price, calculate the markup: $125.00 * 0.38 = $47.50. Then add the markup to the cost: $125.00 + $47.50 = $172.50. Thus, the retail price of the alternator is $172.50.

An auto parts store pays $125.00 for an alternator. They mark up all parts 25% for shop sales. What is the shop sale price of the alternator?

• $156.25

• $150.00

• $160.00

• $175.00

Answer explanation

To find the shop sale price, calculate 25% of $125.00: 0.25 * 125 = $31.25. Then add this to the original price: 125 + 31.25 = $156.25. Thus, the shop sale price of the alternator is $156.25.

American auto parts makes a 5% profit on antifreeze sales. If antifreeze costs $7.35 per gallon, what will the sales price be?

• $7.72

• $7.50

• $7.70

• $7.80

Answer explanation

To find the sales price, calculate 5% of $7.35: 0.05 * 7.35 = $0.3675. Add this to the cost: $7.35 + $0.3675 = $7.7175, rounded to $7.72. Thus, the sales price is $7.72.

How can you calculate MPG?

• Range + gallons

• Range - gallons

• Range x gallons

• Range / gallons

Answer explanation

To calculate MPG (miles per gallon), divide the total range (miles driven) by the number of gallons used. Thus, the correct formula is Range / gallons.

Which of the following is NOT a factor in calculating fuel mileage?

• Range

• Gallons

• Insurance

• MPG

Answer explanation

Insurance is not related to fuel mileage calculations. Fuel mileage is determined by factors like range, gallons used, and miles per gallon (MPG). Therefore, the correct answer is Insurance.