Question

Following are the car parking charges near a railway station up to:

4 hrs = RS 60
8 hrs = RS 100
12 hrs = Rs 140
24 hrs = RS 180

-check if the charges are in direct propotions

Answer 1

They are not

4 hrs - Rs 60

4× 15 = 60

So 15 is proportionality constant

8 hrs - 100

here constant = 100/8 = 25/2

So they are not in proportion

Answer 2

1. proportion of 4 hrs and rs. 60 = 1:15

2. proportion of 8 hrs and rs. 200 = 1:25

3. proportion of 12 hrs and rs. 140 = 3:35

4. proportion of 24 hrs and rs. 180 = 2:15

No there is no similar proportion