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25 January, 00:51

Peter purchased 14 new baseball cards for his collection. This increased the size of his collection by 35%. How many baseball cards does Peter now have?

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  1. 25 January, 03:55
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    Peter now has 54 baseball cards

    Step-by-step explanation:

    Percentages

    Assume Peter had x baseball cards in his collection. The 35% of his initial collection is

    35 * x / 100 = 0.35x

    We know that those 14 new baseball cards represent a 35% of his previous collection, therefore we can set a simple equation

    0.35x=14

    When we solve for x, we'll know how many baseball cards Peter had before

    x=14 / 0.35 = 40

    Peter had 40 cards, he added 14 new baseball cards, so he now has 40+14=54

    Peter now has 54 baseball cards
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