instruction:
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:
Question: How many pieces of 0.85 metres can be cut from a rod 42.5 metres long?

 Option A: 30

 Option B: 40

 Option C: 50

 Option D: 60

 Option E: 70
answer:
Option C


question:
Question: A and B invests Rs.3000 and Rs.4000 respectively in a business. If A doubles his capital after 6 months. In what ratio should A and B divide that year's profit?

 Option A: 9:6

 Option B: 9:8

 Option C: 9:1

 Option D: 9:9

 Option E: 9:5
answer:
Option B


question:
Question: A man buys an article and sells it at a profit of 20%. If he had bought it at 20% less and sold it for Rs.90 less, he could have gained 25%. What is the cost price?

 Option A: 372

 Option B: 375

 Option C: 278

 Option D: 267

 Option E: 450
answer:

Option E