turkey-yks 2010 Q25

turkey-yks · Other · ygs Not Maths
On a street, the houses on the upper side of the road are numbered with consecutive odd numbers, and those on the lower side are numbered with consecutive even numbers. The numbers increase from left to right.
For the house numbers of A and $B$, $A - B = 15$. Accordingly, what is the difference $C - D$ for the house numbers of $C$ and $D$?
A) 9
B) 11
C) 13
D) 15
E) 17 
On a street, the houses on the upper side of the road are numbered with consecutive odd numbers, and those on the lower side are numbered with consecutive even numbers. The numbers increase from left to right.

For the house numbers of A and $B$, $A - B = 15$. Accordingly, what is the difference $C - D$ for the house numbers of $C$ and $D$?\\
A) 9\\
B) 11\\
C) 13\\
D) 15\\
E) 17
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