A car covers a certain distance with uniform speed (y km/h) in x hrs. Use the following table to find the values of a, b and c.

The table, given below, shows the values of x and y, where x is proportional (directly proportional) to y.

The values of A and B are :

1. A = 16 and B = 18

2. A = 32 and B = 9

3. A = 9 and B = 32

4. A = 18 and B = 16

If (m + n) : (n - m) = 5 : 2; m : n is :

1. 3 : 7

2. 7 : 3

3. 5 : 3

4. 3 : 5