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: A broker invested her own money in the stock market. During the first year, she increased her stock market wealth by 40 percent. In the second year, largely as a result of a slump in the stock market, she suffered a 30 percent decrease in the value of her stock investments. What was the net increase or decrease on her overall stock investment wealth by the end of the second year?

Option A: 5%

Option B: 2%

Option C: 15%

Option D: 20%

Option E: 80%

SOLUTION: Option B

PROBLEM: Question: A train passes a station platform in 36 sec and a man standing on the platform in 20 sec. If the speed of the train is 54 km/hr. What is the length of the platform?

Option A: 229

Option B: 240

Option C: 288

Option D: 277

Option E: 221

SOLUTION: Option B

PROBLEM: Question: Statements: In a one day cricket match, the total runs made by a team were 200. Out of these 160 runs were made by spinners.
Conclusions:
1) 80% of the team consists of spinners.
2) The opening batsmen were spinners.

Option A: Only conclusion I follows

Option B: Only conclusion II follows

Option C: Either I or II follows

Option D: Neither I nor II follows

Option E: Both I and II follow

SOLUTION:
Option D