Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
--------
Question: Problem: the average score of a cricketer in 2 matches is 30 and in other 3 matches is 40. then find the average score in all the 5 matches ?
Options: a. 25, b. 27, c. 30, d. 35, e. 36

Answer: e


Question: Problem: the total marks obtained by a student in mathematics and physics is 50 and his score in chemistry is 20 marks more than that in physics. find the average marks scored in mathamatics and chemistry together.
Options: a. 15, b. 25, c. 35, d. 45, e. 55

Answer: c


Question: Problem: a train crosses a platform of 200 m in 15 sec, same train crosses another platform of length 300 m in 20 sec. then find the length of the train ?
Options: a. 100 m, b. 180 m, c. 159 m, d. 250 m, e. 152 m

Answer:
a