Question

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?

Answer 1

$90

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