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: If x persons take y days to complete z similar jobs, how long does it take y persons to complete 1 such job?

 Option A: z

 Option B: x

 Option C: x/y

 Option D: z/x

 Option E: x/z
[A]: Option E


[Q]: Question: The difference between the place values of 7 and 3 in the number 527435 is

 Option A: 4

 Option B: 5

 Option C: 45

 Option D: 6970

 Option E: None
[A]: Option D


[Q]: Question: Abbey's income is 30 percent more than Abigail's income, and Abigail's income is 35 percent less than Jenny's income. What percent of Jenny's income is Abbey's income?

 Option A: 84.5%

 Option B: 81.5%

 Option C: 82.5%

 Option D: 83.5%

 Option E: 86.5%
[A]:
Option A