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: If a college has 15 staff for every 700 students, then what is the number of staff for 1400 students?

 Option A: 30

 Option B: 14

 Option C: 12

 Option D: 17

 Option E: 19

A: Option A
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Q: Question: Every year an amount increases by 1/8th of itself. How much will it be after two years if its present value is Rs.1600?

 Option A: 3000

 Option B: 4200

 Option C: 2025

 Option D: 1205

 Option E: 3251

A: Option C
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Q: Question: Two trains of equal length are running on parallel lines in the same directions at 46km/hr. and 36km/hr. The faster trains pass the slower train in 18 seconds. The length of each train is:

 Option A: 25m

 Option B: 50m

 Option C: 72m

 Option D: 80m

 Option E: None of these

A:
Option A
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