A salesman’s terms were changed from a flat commission of 5% on all his sales to a fixed salary of Rs.1000 plus 2.5% commission on all sales exceeding Rs. 4,000. If his remuneration as per new scheme was Rs. 600 more than that by the previous schema, his sales were worth? Choose the correct choice from the following answers.
A) 12002	B) 12000	C) 12028	D) 12020	E) 12013
[1000 + (X-4000) * (2.5/100)] - X * (5/100)   = 600   X = 12000   Answer: 12000
<result>B</result>
A salesman’s terms were changed from a flat commission of 5% on all his sales to a fixed salary of Rs.1000 plus 2.5% commission on all sales exceeding Rs. 4,000. If his remuneration as per new scheme was Rs. 600 more than that by the previous schema, his sales were worth?