Question

Followings are the ear parking charges near a railway station upto

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 the parking time.

Answer 1

Since $\frac{4}{60}\ne \frac{8}{100}\ne \frac{12}{140}\ne \frac{24}{180}$
$\therefore$ The parking charges are not in direct proportion to the parking time.