Numerical: Percentage Basics MCQ — 13 Practice Questions with Answers

Explanation

To convert a percentage into a fraction, write it over 100 and simplify. For 12.5%, we get 12.5/100. Because the decimal is inconvenient, multiply the numerator and denominator by 10: 12.5/100 = 125/1000. Now divide both parts by 125 to get 1/8. Therefore, 12.5% is not 1/6; it is 1/8. The other conversions are correct, so the incorrect conversion is option D.

Explanation

To convert a fraction into a percentage, multiply it by 100%. Here, 3/8 × 100% = 300/8% = 37.5%. The fraction 3/8 is exactly 0.375, and moving from decimal to percentage means multiplying by 100, not by 10 or 1000. A quick check is that 1/8 = 12.5%, so 3/8 must be 3 × 12.5% = 37.5%. Therefore, 3/8 expressed as a percentage is 37.5%.

Explanation

Convert each percentage into a fraction by writing it over 100 and simplifying. First, 20% = 20/100 = 1/5. Next, 37.5% = 37.5/100 = 375/1000 = 3/8 after simplification. Finally, 75% = 75/100 = 3/4. Now keep the values in the same order as the question. So the correct order for 20%, 37.5% and 75% is 1/5, 3/8, 3/4. This matches the correct option.

Explanation

To find a given percentage of an amount, use percentage × amount ÷ 100. Here, 12.5% of ₹8000 = 12.5 × 8000 ÷ 100. Since 12.5% = 1/8, this can be done mentally as ₹8000 ÷ 8 = ₹1000. Direct calculation also gives 12.5 × 80 = 1000. Both methods reach the same amount. Therefore, the correct value of 12.5% of ₹8000 is ₹1000.

Explanation

To convert a decimal into a percentage, multiply the decimal by 100 and attach the percent sign. For 0.6, we calculate 0.6 × 100 = 60. Therefore, 0.6 = 60%. The decimal is not left unchanged, and it is not multiplied by 10 or 1000. Among the given options, only the conversion 0.6 = 60% follows the correct rule here.