There are 20 20 coins in a jar. Each coin is either a nickel or a quarter. If one of the coins is selected at random, the probability of sel

Question

There are 20 20 coins in a jar. Each coin is either a nickel or a quarter. If one of the coins is selected at random, the probability of selecting a nickel is 0.6 0.6 . How many quarters are in the jar?

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Remi 19 hours 2021-10-14T13:36:46+00:00 1 Answer 0

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    2021-10-14T13:37:59+00:00

    Answer: there are 8 quarters in the jar

    Step-by-step explanation:

    Let x represent the number of nickels that is inside the jar.

    The total number of coins inside the jar is 20.

    Probability is expressed as

    Number of possible or favorable outcomes/total number of outcomes.

    The probability of selecting a nickel is 0.6. This is expressed as

    0.6 = x/20

    Cross multiplying, it becomes

    x = 20 × 0.6

    x = 12

    Since there are 12 nickels inside the jar, then the number of quarters would be

    20 – 12 = 8

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