5 is the whole so they skated 2/5 less than the original whole
The answer to the box is 2
..the deal with the reflection is that you reflect the image according to the mirror line given as you can see the image has been reflected to x x =3and x =7
The answer would be x + x + 2 = 72. Combine like terms so that 2x + 2 = 72. 2x = 70 and x = 35.