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: Mr. Thomas invested an amount of 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be 3508, what was the amount invested in Scheme B?

 Option A: 6400

 Option B: 6500

 Option C: 7200

 Option D: 7500

 Option E: None of these
[A]: Option A


[Q]: Question: A boat can travel with a speed of 25km/hr in still water. If the speed of the stream is 5km/hr, find the time taken by the boat to go 120km downstream.

 Option A: 1 hr

 Option B: 2 hrs

 Option C: 3 hrs

 Option D: 4 hrs

 Option E: 5 hrs
[A]: Option D


[Q]: Question: A bowl was filled with 10 ounces of milk, and 0.008 ounce of the milk evaporated each day during a 50-day period. What percent of the original amount of milk evaporated during this period?

 Option A: 0.004%

 Option B: 0.04%

 Option C: 4%

 Option D: 40%

 Option E: 42%
[A]:
Option C