TEAS 7 Math Practice Test

Correct Answer: B

Rationale: To calculate a 20% decrease from 400 mg, we first find 20% of 400, which is 80 mg. Subtracting 80 mg from the current dosage of 400 mg gives us the new dosage after the decrease: 400 mg - 80 mg = 320 mg. Therefore, the correct answer is B (80 mg). Choices A, C, and D are incorrect as they do not accurately reflect a 20% decrease from the original 400 mg dosage.

Correct Answer: C

Rationale: To find the fraction of the class that wanted to work with the elderly, we add the percentage of students who wanted to work with the elderly, which is 60%. This can be represented as 60/100, which simplifies to 3/5. Choice A (1/4) is incorrect because it represents the fraction of students who wanted to work with infants, which is 25%. Choice B (1/10) is incorrect as it represents the fraction of students who wanted to assist general practitioners, which is 10%. Choice D (1/20) is incorrect as it does not correspond to any of the given percentages in the question.

Correct Answer: B

Rationale: The correct answer is B: 1 centimeter. The average length of a human eyelash is around 1 centimeter. This length is suitable for protecting the eyes from debris and dust particles while allowing them to function properly. Choice A, 1 nanometer, is far too small for an eyelash. Choice C, 1 meter, and choice D, 1 kilometer, are both significantly longer than the actual length of a human eyelash, making them unrealistic and incorrect options.

Correct Answer: B

Rationale: To find the approximate number of people who voted for the proposition, we multiply the town's population by the percentage that voted: 51,623 * 9.5% = 51,623 * 0.095 = 4,904. Therefore, approximately 5,000 people voted for the proposition. Choice A (3,000) is too low because 9.5% of the population would result in more voters. Choice C (7,000) is too high because it exceeds the calculation based on the given percentage. Choice D (10,000) is also too high as it overestimates the number of voters based on the percentage provided.

Correct Answer: C

Rationale: To calculate the total amount Margery expects to spend on her vacation, we need to add up all her expenses. The airfare is $572. The hotel costs $89 per night for 5 nights, but she will receive a 10% discount after the first night, so the total hotel cost is (1 night + 4 nights * 0.9) * $89 = $400.10. She has allotted $150 for sightseeing and $250 for meals. Adding all these expenses together: $572 (airfare) + $400.10 (hotel) + $150 (sightseeing) + $250 (meals) = $1,372.10. Therefore, the total amount Margery expects to spend on her vacation is $1,372.10, which is closest to option C: $1,381.40. Options A, B, and D are incorrect because they do not accurately calculate the total expenses based on the