TASK DEFINITION: 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.
PROBLEM: Question: A train speeds past a pole in 15 sec and a platform 140 m long in 25 sec, its length is?

Option A: 210

Option B: 150

Option C: 160

Option D: 170

Option E: 180

SOLUTION: Option A

PROBLEM: Question: If the average (arithmetic mean) of five consecutive negative integers is 8k 1, what is the difference between the greatest and least of the five integers?

Option A: 4K

Option B: 4k^2 -4k

Option C: 4-4k

Option D: 4

Option E: 4k+4

SOLUTION: Option D

PROBLEM: Question: Alok ordered 16 chapatis, 5 plates of rice, 7 plates of mixed vegetable and 6 ice-cream cups. The cost of each chapati is Rs.6, that of each plate of rice is Rs.45 and that of mixed vegetable is Rs.70. The amount that Alok paid the cashier was Rs.961. Find the cost of each ice-cream cup?

Option A: 25

Option B: 66

Option C: 77

Option D: 99

Option E: 91

SOLUTION:
Option A