GMAT Quantitative Reasoning Practice Test 3

Question : 47 of 100

Marks: +1, -0

The mall charges 50 cents for the first hour of parking and

\$3

for each additional hour until the customer reaches 4 hours, after that the parking fee is

\$1

per hour. If a certain customer parked his in the mall for 7 hours and 30 minutes, how much is he going to pay?

$\$ 11.5$
$\$ 12$
$\$ 13$
$\$ 14.5$
$\$ 15$

Validate

Solution:

The customer parked for 7 hours and 30 minutes. Divide the problem into parts:
The first hour cost him 0.5 dollars. He has 6.5 hours left.
The next three hours cost him 3 dollars per hour,

\$ 9

in total for that time.
He has

7.5-4=3.5

hours left at a wage of

\$ 1

per hour, it sums up to 3.5 additional dollars. Sum it all up:

0.5+9+3.5=\$ 13

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