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6 January, 10:33

Riley and Erik have earned a total of 135 tokens to buy items in the school store. The ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7. How many tokens does Riley have?

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  1. 6 January, 10:51
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    There are 72 tokens with Riley and 63 tokens with Erik

    Solution:

    Riley and Erik have earned a total of 135 tokens to buy items in the school store

    Total number of tokens = 135

    The ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7

    Number of tokens with Riley : Number of tokens with Erik = 8 : 7

    Let the number of tokens with Riley be 8x

    Let the number of tokens with Erik be 7x

    Since, Total number of tokens = 135

    number of tokens with Riley + number of tokens with Erik = 135

    8x + 7x = 135

    15x = 135

    x = 9

    Therefore,

    Number of tokens with Riley = 8x = 8 (9) = 72

    Number of tokens with Erik = 7x = 7 (9) = 63

    Thus there are 72 tokens with Riley and 63 tokens with Erik
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