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.

[Q]: Question: An inspector rejects 15% of the meters as defective. How many will he examine to reject 15?

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E
[A]: Option A


[Q]: Question: The average age of students in section A of 100 students is 20 years and the average age of students in section B of 150 students is 30 years. Find the average age of students in both sections taken together?

 Option A: 26 years

 Option B: 30years

 Option C: 15years

 Option D: 25years

 Option E: 20years
[A]: Option A


[Q]: Question: If 3 workers collect 48 kg of cotton in 4 days, how many kg of cotton will 9 workers collect in 2 days?

 Option A: 88 kg

 Option B: 65 kg

 Option C: 72 kg

 Option D: 44 kg

 Option E: 55 kg
[A]:
Option C