TASK DEFINITION: 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.
PROBLEM: Question: The wages earned by Robin is 38% more than that earned by Erica. The wages earned by Charles is 60% more than that earned by Erica. How much % is the wages earned by Charles more than that earned by Robin?

 Option A: 23%

 Option B: 27.53%

 Option C: 30%

 Option D: 50%

 Option E: 100%

SOLUTION: Option B

PROBLEM: Question: A shopkeeper sold an book offering a discount of 5% and earned a profit of 30%. What would have been the percentage of profit earned if no discount was offered?

 Option A: 140

 Option B: 120

 Option C: 130

 Option D: 136.8

 Option E: 150

SOLUTION: Option D

PROBLEM: Question: If 7<x<9<y<15, then what is the greatest possible positive integer difference of x and y?

 Option A: 7

 Option B: 4

 Option C: 5

 Option D: 6

 Option E: 3

SOLUTION:
Option A