At a pet store, Rhonda paid $11.50 for 3 dog bowls and 4 bones. Kelly paid $13 for 2 dog bowls and 8 bones. How much will Andrew pay for 4 dog bowls and 2 bones?

Question

At a pet store, Rhonda paid $11.50 for 3 dog bowls and 4 bones.  Kelly paid $13 for 2 dog bowls and 8 bones.  How much will Andrew pay for 4 dog bowls and 2 bones?

Steve · Answer

If A = 3d+4b = 11.50 B = 2d+8b = 13.00 4d+2b = 7/4 A - 5/8 B = 7/4 * 11.50 - 5/8 * 13.00 = 12.00