Question

A is directly proportional to b such that a=2b
find a when b=3
find b when a =7​

Answer 1

a=2*3 = 6.

7=2b

7/2= 2ɓ/2

b=7/2 or 3⅓.

Answer 2

6

3.5

Explanation:

a=2b

a=2(3) = 6

7=2b = 7/2 = 3.5

I hope this helps.