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The MCQs below are drawn from the Mathematics subject category.
Showing 7431–7440
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7431
If x% of 500 is 50, find the value of x.
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Explanation
We have (x/100) * 500 = 50. This simplifies to 5x = 50. Dividing by 5 gives x = 10.
7432
Half of 1 percent written as a decimal is:
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Correct Option
Explanation
One percent is 1% or 0.01. Half of 1 percent is 0.5% = 0.5 / 100 = 0.005.
7433
Express 125% as a fraction in its simplest form.
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Explanation
To convert a percentage to a fraction, divide by 100. 125% = 125 / 100. Simplifying by dividing the numerator and denominator by 25 gives 5/4.
7434
What percent of 2 hours is 30 minutes?
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Explanation
First, convert both to the same unit. 2 hours = 120 minutes. Now find what percent 30 is of 120: (30 / 120) * 100 = (1 / 4) * 100 = 25%.
7435
What is 12.5% of 800?
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Explanation
12.5% can be expressed as the fraction 1/8. Multiplying 800 by 1/8 gives 100.
7436
What is 15% of 150?
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Explanation
To find 15% of 150, multiply 150 by 0.15. 150 * 0.15 = 22.5.
7437
If 30% of a number is 120, what is the number?
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Explanation
Let the number be x. 30% of x = 120. So, (30/100) * x = 120. Solving for x gives x = (120 * 100) / 30 = 400.
7438
Express 0.08 as a percentage.
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Explanation
To convert a decimal to a percentage, multiply the decimal by 100. 0.08 * 100 = 8%.
7439
Express 4/5 as a percentage.
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Explanation
To convert a fraction to a percentage, multiply it by 100. (4 / 5) * 100 = 4 * 20 = 80%.
7440
What percent of 50 is 20?
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Correct Option
Explanation
To find what percent one number is of another, use the formula (Part / Whole) * 100. Here, (20 / 50) * 100 = 0.4 * 100 = 40%.
