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14 July, 18:35

A poll of 500 people determines that 382 like ice cream and 362 like cake. How many people like both if each of them likes at least one of the two?

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Answers (2)
  1. 14 July, 21:24
    0
    284 people like both.

    Step-by-step explanation:

    In order to solve this you just have to use the next formula:

    b. = p (a) + p (b) - p (a)

    We just have to insert the values into the formula:

    B=382+362-500

    B=784-500

    B=284

    So the number of people that like both ice cream and cake, is 284.
  2. 14 July, 22:00
    0
    244

    Step-by-step explanation:

    Given dа ta:

    People liking ice cream, P (A) = 382

    People liking cake, P (B) = 362

    Total people, P (A∪B) = 500

    Now,

    We know,

    P (A∪B) = P (A) + P (B) - P (A∩B)

    where,

    P (A∩B) = People liking both the ice cream and the cake

    On substituting the respective values, we get

    500 = 382 + 362 - P (A∩B)

    or

    P (A∩B) = 244

    Hence,

    the number of people who like both ice cream and the cake are 244
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