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 sequence contains y numbers of alternating positive and negative numbers, If the first number is postive and y is an even number, how many negative numbers are in it?

Option A: (y+1

Option B: (y-1

Option C: y/(2+1

Option D: y/(2-1

Option E: y/2
Option E

Question: A certain company reported that the revenue on sales increased 40 % from 2000 to 2003, and increased 90 % from 2000 to 2005. What was the approximate percent increase in revenue for this store from 2003 to 2005?

Option A: 50 %

Option B: 36 %

Option C: 30 %

Option D: 32 %

Option E: 29 %
Option B

Question: How many Kg of rice at Rs.6.60 per Kg. be mixed with 56Kg of rice at Rs.9.60 per Kg to get a mixture
worth Rs.8.20 per Kg

Option A: 56 Kg

Option B: 52 Kg

Option C: 44 Kg

Option D: 49 Kg

Option E: None of these
Option D