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You rented a beach umbrella for 6 days. The first day was $20, each day afterwards the cost dropped by $2 a day. What did you spend for the umbrella for all 6 days?

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taijdet

Answer:

$90

Step-by-step explanation:

You pay $20 the first day, then subtract $2 each day. Add the numbers up to get the total. 20+(20-2)18+(18-2)16+(16-2)14+(14-2)12+(12-2)10=90

Answer: $90

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