Question

Following are the car parking charges near a railway station up to
4 hours Rs 60
8 hours Rs 100
12 hours Rs 140
24 hours Rs 180
Check if the parking charges are in direct proportion to the parking time.

Answer 1

A table of the given information is formed as

Number of hours	4	8	12	24
Parking charges (in Rs)	60	100	140	180

The ratio of parking charges to the respective number of hours (Rs/ hour) can be calculated as
$\frac{60}{4}$ $= \frac{15}{1} = ₹15$

$\frac{100}{8}$ $= \frac{25}{2} = ₹12.5$

$\frac{140}{12}$ $= \frac{35}{3} = ₹11.67$

\frac{180}{24} $$= \frac{15}{2} = ₹7.50
As each ratio is not same, therefore, the parking charges are not in a direct proportion to the parking time.