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A table top has dimensions of 75cm by 50cm. What is its perimeter if opposite sides are equal?
- A. 125cm
- B. 150cm
- C. 200cm
- D. 50cm
Correct Answer: B
Rationale: Rationale:
- Given that the table top has dimensions of 75cm by 50cm.
- Since opposite sides are equal, the table top can be divided into two pairs of equal sides: 75cm and 50cm.
- To find the perimeter, we add up all four sides: 75cm + 50cm + 75cm + 50cm = 250cm.
- However, since opposite sides are equal, we only need to consider two sides: 75cm + 50cm = 125cm.
- Therefore, the perimeter of the table top is 125cm + 125cm = 150cm.
- Hence, the correct answer is B) 150cm.
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- B. 500 grams
- C. 5,000 grams
- D. 50,000 grams
Correct Answer: C
Rationale: The correct answer is C: 5,000 grams. There are 1,000 grams in a kilogram. Therefore, to convert kilograms to grams, you need to multiply the number of kilograms by 1,000. In this case, 5 kilograms is equal to 5 1,000 = 5,000 grams. Choices A and D are incorrect as they incorrectly multiply by 10,000 instead of 1,000. Choice B is incorrect as it divides instead of multiplies, leading to an incorrect conversion.
If a man reads 2 chapters a day and there are 6 pages per chapter in a 798-page book, how long will it take him to finish the book?
- A. 133 days
- B. 399 days
- C. 75 days
- D. 66.5 days
Correct Answer: D
Rationale: To find the total number of chapters, divide the total number of pages by the number of pages per chapter: 798 · 6 = 133 chapters. If he reads 2 chapters a day, it will take him 133 · 2 = 66.5 days to finish the book. Therefore, the correct answer is 66.5 days. Choice A is incorrect because it miscalculates the number of days required. Choices B and C are incorrect as they do not consider the correct calculation based on the given information.
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- A. 0.3 liters
- B. 3 liters
- C. 0.03 liters
- D. 3.3 liters
Correct Answer: A
Rationale: 300 milliliters is equivalent to 0.3 liters. To convert milliliters to liters, you need to move the decimal three places to the left. Therefore, the correct answer is A. Choice B (3 liters) is incorrect as it represents the conversion of 3000 milliliters. Choice C (0.03 liters) is incorrect as it represents the conversion of 30 milliliters. Choice D (3.3 liters) is also incorrect as it is not the correct conversion of 300 milliliters.
How many inches are in 1.5 yards?
- A. 54 inches
- B. 60 inches
- C. 72 inches
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Correct Answer: A
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How many meters are in 3000 millimeters?
- A. 3 meters
- B. 30 meters
- C. 0.3 meters
- D. 300 meters
Correct Answer: A
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