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Every 4th visitor to a museum gets a free bumper sticker.Every 10th visitor to that museum gets a free key chain.Which visitor number will be the first person to get them both bumper sticker and keychain.

Every 4th visitor to a museum gets a free bumper sticker.Every 10th visitor to that-example-1
User Salmaan P
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1 Answer

5 votes
The 20th visitor. 20 is divisible by 10 and by 4. Therefore you'd be the 4th visitor and the 10th visitor.

So the first person to get both rewards would be the 20th visitor
User Smolnar
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