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: In a certain school, the ratio of boys to girls is 5 to 13. If there are 160 more girls than boys, how many boys are there?

 Option A: 100

 Option B: 36

 Option C: 45

 Option D: 72

 Option E: 117

Answer: Option A


Question: Question: P is three times as fast as Q and working together, they can complete a work in 12 days. In how many days can Q alone complete the work?

 Option A: 11 days

 Option B: 16 days

 Option C: 13 days

 Option D: 15 days

 Option E: 19 days

Answer: Option B


Question: Question: If the cost of x metres of wire is d rupees, then what is the cost of y metres of wire at the same rate?

 Option A: Rs. (ydS

 Option B: s.	(xy/d

 Option C: Rs. (xd

 Option D: Rs. (yd/x

 Option E: Rs. (yd

Answer:
Option D