A man engaged a servant on the condition that he would pay him Rs.1000 and a uniform after one year service. He served only for 9 months and received uniform and Rs.550, find the price of the uniform?
Choices.
A) s . 80  B) s . 85  C) s . 90  D) s . 800  E) s . 120

Rationale: "9 / 12 = 3 / 4 * 1000 = 750 550 - - - - - - - - - - - - - 200 1 / 4 - - - - - - - - 200 1 - - - - - - - - - ? = > rs . 800 answer : d"
Answer: D