You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Question: A 300 m long train crosses a platform in 33 sec while it crosses a signal pole in 18 sec. What is the length of the platform?

 Option A: 286 m

 Option B: 250 m

 Option C: 277 m

 Option D: 278 m

 Option E: 267 m
Option B

Question: The cost price of a radio is Rs.1500 and it was sold for Rs.1230, find the loss %?

 Option A: 18%

 Option B: 19%

 Option C: 28%

 Option D: 38%

 Option E: 16%
Option A

Question: If Rs.450 amount to Rs.540 in 4 years, what will it amount to in 6 years at the same rate % per annum?

 Option A: s.575

 Option B: s.595

 Option C: s.590

 Option D: s.580

 Option E: s.585

Option E