Answer:
If 10 minutes block, then it can be rented for 20 minutes. If no blocks, then 27.27 minutes
Step-by-step explanation:
Initial setup cost is $6.
Every 10 minutes, $5.5 is charges, so each minute [tex]\frac{5.5}{10}=0.55[/tex] is charged.
Let time used be t, so we can set up an equation as:
21 = 6 + 0.55t
Where t is in minutes
we solve for t to find out how many minutes we can rent for $21:
[tex]21 = 6 + 0.55t\\21-6=0.55t\\15=0.55t\\t=\frac{15}{0.55}=27.27[/tex]
since it is charged PER 10 MINUTES, so we can rent it for 10, 20 , 30 minutes etc.
WE CANNOT RENT FOR 30 minutes as we dont have enough money (only for fractional amount of a little over 27 minutes). Thus, we will have to have some money left over and rent for 20 minutes.
