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: Three number are in the ratio 5:6:7. The sum of its largest and smallest numbers equals the sum of the third number and 48. Find the third number?

Option A: 87

Option B: 57

Option C: 48

Option D: 26

Option E: 28
[A]: Option C

[Q]: Question: Bat is bought for Rs.400 and sold at a gain of 20% find its selling price?

Option A: Rs.320

Option B: Rs.350

Option C: Rs.370

Option D: Rs.480

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

[Q]: Question: A man travelled from the village to the post office at the rate of 25kmph and walked backed at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, find the distance of the post office from the village?

Option A: 10km

Option B: 50km

Option C: 30km

Option D: 25km

Option E: 20km
[A]:
Option E