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 mixture contains alcohol and water in the ratio 4 : 3. If 5 litres of water is added to the mixture, the ratio becomes 4: 5. Find the quantity of alcohol in the given mixture

Option A: 15 litres

Option B: 10 litres

Option C: 30 litres

Option D: 22 litres

Option E: 8 litres

SOLUTION: Option B

PROBLEM: Question: Three persons invested Rs.9000 in a joint business. The second person invested Rs.1000 more than the first and the third Rs.1000 more than second. After two years, they gained Rs.5400. How much third person will get?

Option A: Rs.2400

Option B: Rs.3600

Option C: Rs.2850

Option D: Rs.2000

Option E: Rs.3000

SOLUTION: Option A

PROBLEM: Question: A and B can together finish a work in 10days. They worked together for 5days and then B left. After another 5days, A finished the remaining work. In how many days A alone can finish the job?

Option A: 10

Option B: 15

Option C: 20

Option D: 5

Option E: 30

SOLUTION:
Option A