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: When the no.7y86038 is exactly divisible by 11, then the smallest whole no.in place of y?

Option A: 3

Option B: 4

Option C: 6

Option D: 7

Option E: 9

A: Option A
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Q: Question: Two pipes A and B can fill a tank in 15 min and 20 min respectively. Both the pipes are opened together but after 4 min, pipe A is turned off. What is the total time required to fill the tank?

Option A: 14 min 19 sec

Option B: 14 min 42 sec

Option C: 14 min 20 sec

Option D: 14 min 40 sec

Option E: 14 min 10 sec

A: Option D
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Q: Question: Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 percent fescue. If a mixture of X and Y contains 30 percent ryegrass, what percent of the weight of this mixture is X ?

Option A: 10%

Option B: 33.33 %

Option C: 40%

Option D: 50%

Option E: 66.66 %

A:
Option B
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