When positive integer x is divided by 10, the quotient is y and the remainder is 3. When 2x is divided by 7, the quotient is 3y and the remainder is 1. What is the value of 11y – x? Choose the correct option
A) 2
B) -2
C) 3
D) -3
E) 4
(1) x = 10y+3   (2) 2x = 21y+1   (2)-(1): x=11y-2   11y-x=2   The answer is 2.
<result>A</result>
When positive integer x is divided by 10, the quotient is y and the remainder is 3. When 2x is divided by 7, the quotient is 3y and the remainder is 1. What is the value of 11y – x?