Complete Question:
Option 1: $30 an hour plus a non-refundable deposit of $50.
Option 2: $20 an hour plus a non-refundable deposit of $75.
Kyle is renting a jetski for the day. If he can rent the jetski in 1-hour increments, what is the minimum number of hours must he rent the jetski for option 2 to be a better deal than option 1?
Answer:
Kyle must rent the jetski for three hours for option 2 to be a better deal than option 1
Solution:
Let "x" be the number of hours
Therefore,
Charge for option 1: 50 + 30x
For 1 hour,
Charge = 50 + 30(1) = 80
For 2 hours,
Charge = 30(2) + 50 = 110
For 3 hours,
Charge = 30(3) + 50 = 140
For 4 hours,
Charge = 30(4) + 50 = 160
Charge for option 2 : 75 + 20x
For 1 hour,
Charge = 20(1) + 75 = 95
For 2 hours ,
Charge = 20(2) + 75 = 115
For 3 hours,
Charge = 20(3) + 75 = 135
For 4 hours,
Charge = 20(4) + 75 = 155
For the first two hours , the charge of option 2 is more than the rent of option 1
From 3 hours, option 2 will be better deal than option 1