instruction:
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.
question:
Question: A sum of Rs.4800 is invested at a compound interest for three years, the rate of interest being 10% p.a., 20% p.a. and 25% p.a. for the 1st, 2nd and the 3rd years respectively. Find the interest received at the end of the three years?

Option A: Rs.3129

Option B: Rs.3120

Option C: Rs.3108

Option D: Rs.3106

Option E: Rs.3127
answer:
Option B

question:
Question: Two trains of equal are running on parallel lines in the same direction at 45 km/hr and 36 km/hr. The faster train passes the slower train in 36 sec. The length of each train is?

Option A: 45

Option B: 88

Option C: 66

Option D: 55

Option E: 22
answer:
Option A

question:
Question: What number comes next?
428, 693, 714, 286, 937, ?

Option A: 142

Option B: 231

Option C: 245

Option D: 148

Option E: 123
answer:
Option A