Question

How do u do this??????????????????

Answer 1

10% commission on $4000 is $400. Therefore the ratio is:
$200:$400
or
1:2
(B)

Answer 2

You have to decode the wording a little.
Basic Salary = 200 dollars
Commission = 10% of 4000 (of means multiply) = (10/100) * 4000 = 40000/100 = 400

The question says
Basic salary / Commission
200 / 400
1 to 2