Venn Diagram and Percentage Calculation
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Questions and Answers

What percentage of students in the English class are not in Augustine, Deacon, or Muluridji?

  • 50%
  • 37.5% (correct)
  • 62.5%
  • 25%

    • What is the overall percentage discount on the guitar?

  • 30%
  • 31.25% (correct)
  • 32.5%
  • 33.75%

    • What is the final selling price of the computer after both the increase and decrease?

  • $1,275 (correct)
  • $1,308
  • $1,341
  • $1,242

    • What is the original price of the shirt?

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

    What percentage of people do not like chocolate or strawberry ice-cream?

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

    What is the probability that a student selected at random from the class is in Augustine?

    <p>1/5</p> Signup and view all the answers

    What is the overall percentage change in the price of the computer?

    <p>2.5%</p> Signup and view all the answers

    What is the discounted price of the guitar after the first discount?

    <p>$341</p> Signup and view all the answers

    If a store is having a 15% sale, and a shirt originally costs $80, how much will you pay for the shirt after the discount?

    <p>$76</p> Signup and view all the answers

    A book costs $50, and after a 20% increase, it costs $60. What percentage increase is this?

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

    In a class, 30% of students like football, and 20% like cricket. If 10 students like both, how many students are there in the class?

    <p>100</p> Signup and view all the answers

    A basketball increased in value from $50 to $80 after it had been signed by Patty Mills. What is the percentage increase?

    <p>50%</p> Signup and view all the answers

    At a school, 15% of 120 students were absent. How many students were absent?

    <p>24</p> Signup and view all the answers

    What is the probability that a toddler, selected at random, likes oranges or pears?

    <p>More than 0.5</p> Signup and view all the answers

    A surfboard originally costs $2800, and there is a 20% discount. What is the sale price of the surfboard?

    <p>$2240</p> Signup and view all the answers

    If 27 students out of 180 are left-handed, what percentage of students are left-handed?

    <p>18%</p> Signup and view all the answers

    What is the mode of the number of books read by students?

    <p>9</p> Signup and view all the answers

    If a toddler is selected at random, what is the probability that they like oranges?

    <p>7/24</p> Signup and view all the answers

    What is the effect of adding a student who has read 31 books to the data set on the mean?

    <p>It will increase</p> Signup and view all the answers

    What is the probability of selecting a green ticket from the box?

    <p>5/12</p> Signup and view all the answers

    What is the percentage decrease in the price of the shirt?

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

    What is the percentage increase in the population of the town?

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

    What will be the new price of the pie after the 6% increase?

    <p>$5.25</p> Signup and view all the answers

    What is the probability that a person surveyed likes chocolate ice-cream?

    <p>0.8</p> Signup and view all the answers

    Study Notes

    Probability and Statistics

    • To draw a Venn diagram, it's essential to determine the percentage of people who don't like chocolate or strawberry ice-cream.
    • The probability of a student selected at random from a class being in McAuley is determined by finding the probability that a student is not in Augustine, Deacon, or Muluridji.

    Discounts and Percentages

    • If a guitar's original price is $440, and it's discounted by 25%, then further discounted by 10%, the final price and overall percentage discount can be calculated.
    • A store raises the price of a computer by 15% and then reduces it by 10% during a sale; the final selling price and overall percentage change in the price can be determined.
    • A shirt's original price can be found if it's discounted by 15% and the new price is $41.65.

    Data Analysis

    • The mean, mode, and median of a dataset can be calculated, and the range and effect of an outlier on these values can be determined.
    • The probability of selecting a green ticket from a box of red, black, and green tickets can be calculated.

    Percentage Changes

    • The percentage decrease in the price of a shirt from $40 to $32 can be calculated.
    • The percentage increase in a town's population from 20,000 to 24,000 can be calculated.
    • The new price of a pie after a 6% increase from $5 can be calculated.

    Surveys and Venn Diagrams

    • A survey determines which flavors of ice-cream a shop should sell; 80 people were surveyed, and Venn diagrams can be used to represent the findings.
    • The probability of a toddler liking oranges or pears can be calculated from survey data.

    Revision Sheet

    • Trevor's sports shop has a sale of 20% off surfboards; the discount and new price can be calculated.
    • The percentage of left-handed students in a group and the percentage of right-handed students can be calculated.
    • The number of absent students if 15% of 120 students are absent can be calculated.
    • The increase and percentage increase in the value of a basketball signed by Patty Mills can be calculated.

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    Description

    Quiz questions on drawing a Venn diagram and calculating percentage of people who don't like certain ice-cream flavors and a separate question on fractions of students in different classes.

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