A parking garage charges $4.004.00 for the first hour and $3.503.50 for each additional hour. If a customer gave the parking attendant $3030 for parking from 10 A. M. to 3 P. M. , how much did the garage charge?

garage cost = $ 12

Explanation:

given,

garage charge for first hour = $ 4.00

and for every additional hour = $ 3.50

customer pays = $ 30

garage charges = ?

time for which car was parked = 5 hrs

total charge = garage cost + first hour charge + 4 hour charge

$ 30 = garage cost + $ 4.00 + $ 3.50 * 4

garage cost = $ 30 - $ 18

garage cost = $ 12

hence, the garage cost comes out to be $ 12