9. A car park charges Php 45 for the first 3 hours and Php 5 for every succeeding
hour of fraction thereof. Another car park charges Php 20 for the first 3 hours and
Php 10 for every succeeding hour or a fraction thereof. In how many hours would
a car owner pay the same parking fee in any of the two car parks?
A.2
B. 3
C.5
D.8
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