If 2x + y = 7 and 3x – 2y = 3, by how much is 7x greater than 10?

A. 1
B. 3
C. 7
D. 10
E. 17

Correct Answer: Option C

C. 7

Explanation
2x + y = 7 = i
3x – 2y = 3 = ii
i x 2 + ii = 4x + 2y = 14

3x−2y=37x=17

x = 177 = 7x = 17 x 1/7 x 7
17 – 10 = 7