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21 June, 05:15

A bag contains white marbles and blue marbles, 54 in total. The number of white marbles is 1 less than 4 times the number of blue marbles. How many white marbles are there?

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Answers (2)
  1. 21 June, 06:41
    0
    43

    Step-by-step explanation:

    W = 4B - 1

    W + B = 54

    4B - 1 + B = 54

    5B = 55

    B = 11

    W = 4 (11) - 1

    W = 43
  2. 21 June, 08:26
    0
    Answer: There are 43 white marbles.

    Step-by-step explanation:

    t = total number of marbles = 54

    w = white marbles = 4b - 1

    b = blue marbles

    54 = b + (4b - 1)

    b + 4b = 5b

    54 = 5b - 1

    +1

    55 = 5b

    /5

    11 = b

    There are 11 blue marbles.

    4 (11) - 1

    44 - 1 = 43

    43 + 11 = 54, therefore our solutions are correct.
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