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

On the first day the cost is $20
Over the next 5 days the price decreased by 2

So, day 1- $20
Day 2- $18
Day 3- $16
Day 4- $14
Day 5- $12
Day 6- $10

We'll then add them all to find the total over 6 days

$20+$18+$16+$14+$12+$10= $90

Over all six days, the total price is $90