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What is the result of adding 4.934, 7.1, and 9.08 together?
- A. 21.114
- B. 21.042
- C. 20.214
- D. 59.13
Correct Answer: A
Rationale: To find the sum of 4.934, 7.1, and 9.08, you simply add them together: 4.934 + 7.1 + 9.08 = 21.114. Therefore, the correct answer is A, which equals 21.114. It is important to pay attention to the precision of the numbers while performing arithmetic operations to ensure an accurate result.
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What is 80% of 55?
- A. 45
- B. 44
- C. 40
- D. 39
Correct Answer: B
Rationale: To calculate 80% of a number, you multiply the number by 0.80 or 80/100. In this case, to find 80% of 55, you would do 55 * 0.80, which equals 44. Therefore, the correct answer is 44, corresponding to option B. When finding a percentage of a number, remember that you are essentially finding a fraction of that number based on the percentage given. In this case, 80% is the same as 80/100 or 0.80 as a decimal. Multiplying this by 55 gives you the result of 44. Therefore, option B is the correct answer.
A man is 6'4' tall and weighs 228 pounds. The ideal weight chart indicates that his maximum desirable weight is 204 pounds. What percentage overweight is this man?
- A. 16.50%
- B. 20%
- C. 10%
- D. 2%
Correct Answer: C
Rationale: To calculate the percentage overweight:
1. Find the excess weight: 228 lbs - 204 lbs = 24 lbs.
2. Calculate the percentage: (24 lbs / 204 lbs) * 100 = 11.76%
3. Choose the closest option, which is C: 10%.
The correct answer is C (10%) because it represents the closest rounded percentage to the calculated 11.76%. Other choices are incorrect as they do not reflect the accurate percentage of excess weight.
Roger's car gets an average of 25 miles per gallon. If his gas tank holds 16 gallons, about how far can he drive on a full tank?
- A. 400 miles
- B. 100 miles
- C. 320 miles
- D. 41 miles
Correct Answer: A
Rationale: To determine the distance Roger can drive on a full tank, you need to multiply the miles per gallon by the tank capacity. Since his car gets 25 miles per gallon and the tank holds 16 gallons, the calculation would be: 25 miles/gallon * 16 gallons = 400 miles. Therefore, Roger can drive approximately 400 miles on a full tank of gas.
Seven girls each have seven cats. How many legs are there in the group?
- A. 210
- B. 63
- C. 186
- D. 49
Correct Answer: A
Rationale: To find the total number of legs, we multiply the number of girls by the number of legs each girl and cat has. 7 girls x (2 legs per girl + 4 legs per cat) x 7 cats = 7 x (2+4) x 7 = 7 x 6 x 7 = 210 legs.
Choice A is correct because it correctly calculates the total number of legs.
Choice B is incorrect as it only considers the girls' legs.
Choice C is incorrect as it does not account for the cats' legs.
Choice D is incorrect as it only considers the number of cats.
Calculate the product: (7.2)(0.34) =
- A. 14.12
- B. 0.234
- C. 7.64
- D. 2.448
Correct Answer: D
Rationale: When multiplying decimals, treat the numbers as whole numbers and then position the decimal point in the product so that it has the same total number of decimal places as the numbers being multiplied. In this case, multiplying 7.2 by 0.34 results in 2.448.