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.
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Question: Question: If p/8 = r/2 and r = 0.75s, what is the ratio of p to r to s?

Option A: 2 : 3 : 4

Option B: 8 : 12 : 9

Option C: 24 : 6 : 8

Option D: 6 : 4 : 3

Option E: 12 : 8 : 3

Answer: Option C

Question: Question: Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is:

Option A: 20

Option B: 21

Option C: 28

Option D: 32

Option E: None

Answer: Option C

Question: Question: The toll for crossing a certain bridge is $0.75 each crossing. Drivers who frequently use the bridge may instead purchase a sticker each month for $11 and then pay only $0.30 each crossing during that month. If a particular driver will cross the bridge twice on each of x days next month and will not cross the bridge on any other day, what is the least value of x for which this driver can save money by using the sticker?

Option A: 14

Option B: 15

Option C: 16

Option D: 28

Option E: 29

Answer:
Option E