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a music store gives every 20th customer a $5 gift card. Every 50th customer gets a $10 gift card. which customer will be the first to receive both types of gift cards?

  • math -

    20, 40, 60, 80, 100, 120, 140

    50, 100, 150, 200

  • math -

    20=2*2*5
    50=2*5*5
    the first customer to receive both = 2*2*5*5=100 - that would be the smallest common multiple

  • math -

    100

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