Math Gr 8 Ch 3: Persentages
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Questions and Answers

What is the symbol for percent?

  • perc
  • per
  • pct
  • % (correct)

    • What is the formula to convert a fraction to a percentage?

  • Percentage = (a/b) × 50
  • Percentage = (a/b) × 25
  • Percentage = (a/b) × 200
  • Percentage = (a/b) × 100 (correct)

    • What is the formula to convert a percentage to a fraction?

  • Fraction = (Percentage/200)
  • Fraction = (Percentage/25)
  • Fraction = (Percentage/50)
  • Fraction = (Percentage/100) (correct)

    • What is the formula to find the percentage of a given number?

    <p>Percentage of a number = (Percentage/100) × Number (D)</p> Signup and view all the answers

    What is the formula to increase a number by a percentage?

    <p>Increased Value = Original Number + (Percentage/100) × Original Number (A)</p> Signup and view all the answers

    What is the formula to find the percentage change?

    <p>Percentage Change = ((New Value - Original Value)/Original Value) × 100 (C)</p> Signup and view all the answers

    What is the method to convert a fraction to a percentage?

    <p>Divide the numerator by the denominator and multiply by 100 (D)</p> Signup and view all the answers

    What is the method to find the percentage of a given number?

    <p>Convert the percentage to a fraction and multiply by the number (A)</p> Signup and view all the answers

    What is the meaning of 25% of a quantity?

    <p>One quarter of the whole quantity (B)</p> Signup and view all the answers

    What is the result of converting the fraction 3/4 to a percentage?

    <p>75% (B)</p> Signup and view all the answers

    A shirt is on sale for 15% off its original price. If the original price was $80, what is the sale price?

    <p>$68 (C)</p> Signup and view all the answers

    A bakery increases the price of a loaf of bread by 10%. If the original price was $2, what is the new price?

    <p>$2.10 (A)</p> Signup and view all the answers

    A student scored 80 marks out of 100 in a test. What percentage did the student score?

    <p>80% (D)</p> Signup and view all the answers

    A car's value depreciates by 20% per year. If the original value was $20,000, what is its value after 1 year?

    <p>$16,000 (D)</p> Signup and view all the answers

    A company's profits increased from $100,000 to $120,000. What is the percentage increase?

    <p>20% (C)</p> Signup and view all the answers

    Two brands of coffee, A and B, are compared in terms of their prices. Brand A costs $10 per pound and Brand B costs $9 per pound. What is the percentage difference in their prices?

    <p>10% (B)</p> Signup and view all the answers

    What is the result of converting the fraction 2/5 to a percentage?

    <p>40% (B)</p> Signup and view all the answers

    A bookstore decreases the price of a book by 18%. If the original price was $120, what is the new price?

    <p>$98.40 (C)</p> Signup and view all the answers

    A car's value increases by 12% in one year. If the original value was $15,000, what is its value after one year?

    <p>$16,800 (A)</p> Signup and view all the answers

    What is the percentage change in the value of a stock that increases from $50 to $65?

    <p>28% (D)</p> Signup and view all the answers

    What is the result of converting the percentage 36% to a fraction?

    <p>3/8 (B)</p> Signup and view all the answers

    A bike's original price is $80. After a 15% discount, what is the sale price?

    <p>$68 (A)</p> Signup and view all the answers

    A student scored 96 marks out of 120 in a test. What percentage did the student score?

    <p>80.5% (C)</p> Signup and view all the answers

    What is the percentage increase in the price of a TV that increases from $400 to $480?

    <p>17% (B)</p> Signup and view all the answers

    What is the percentage of 12 out of 25?

    <p>48% (A)</p> Signup and view all the answers

    A bakery sells 240 loaves of bread per day. If the sales increase by 8%, how many loaves of bread will they sell?

    <p>252 loaves (D)</p> Signup and view all the answers

    A car's value depreciates by 15% per year. If the original value was $30,000, what is its value after 2 years?

    <p>$22,950 (C)</p> Signup and view all the answers

    A student scored 90 marks out of 120 in a test. What percentage did the student score?

    <p>75% (A)</p> Signup and view all the answers

    A company's profits increased from $80,000 to $100,000. What is the percentage increase?

    <p>20% (D)</p> Signup and view all the answers

    A stock's value increases from $40 to $52. What is the percentage change in the value of the stock?

    <p>25% (D)</p> Signup and view all the answers

    A shirt is on sale for 20% off its original price. If the original price was $60, what is the sale price?

    <p>$48 (B)</p> Signup and view all the answers

    Two brands of coffee, A and B, are compared in terms of their prices. Brand A costs $12 per pound and Brand B costs $10 per pound. What is the percentage difference in their prices?

    <p>20% (A)</p> Signup and view all the answers

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