A+B=8 and B+D=8 so A+B=B+D. Therefore A=D Now, A+C=13 and C-D=6 so 13-A=6+D so 13-D=6+D. Hence 2D=7. So D=3.5 and A=3.5 A+B=8 so 5+B=8 hence, B=4.5 A+C=13 so 3.5+C=13 hence C= 9.5

Our four numbers A,B,C & D are 3.5, 4.5, 9.5 and 3.5 respectively.

Skyline #5 Hint: You are never further than 6 blocks from a park in this city

Skyline #4 Hint: Home to the first general use computer

Skyline #1 Hint: Home of two Nobel peace prize winners

Skyline #6 Hint: Home to Michael & Al (Jordon & Capone), City of Big Shoulders or Windy City

Skyline #3 Hint: The Pimento cheese capital of the world

Skyline #7 Hint: World capital of space exploration

Skyline #2 Hint: This cool city wants to be kept “weird”.

Hint 3: Try counting the letters, only one number will follow these …

Hint 2: It helps if the numbers are written down. The words not the actual numbers …