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2 August, 04:21

A bag contains yellow marbles and blue marbles, 37 in total. The number of yellow marbles is 7 more than 5 times the number of blue marbles. How many yellow marbles are there?

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  1. 2 August, 04:39
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    32

    Step-by-step explanation:

    let b represent the number of blue marbles then

    yellow = 5b + 7 and

    b + 5b + 7 = 37, that is

    6b + 7 = 37 (subtract 7 from both sides)

    6b = 30 (divide both sides by 6)

    b = 5

    Thus there are 5 blue and 5 (5) + 7 = 25 + 7 = 32 yellow marbles
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