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1 vote
A music store gives every 20th customer a five dollar gift card every 50th customer gets a $10 gift card which customer will be the first to receive both types of gift cards

User Aown Raza
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2 Answers

3 votes
lowest common multiple of 20 and 50 is 100....so the 100th customer will be the first to get both types of cards
User George Leow
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2 votes
The 100th just multiply 50 and 0 
User Snehasish Karmakar
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