42+32 = 74/2 = 37 and 24+22 = 46/2 = 23

You need to fill number in the bricks in the image below such that the top brick is sum of two brick below it.

Place the numbers 1 - 12 in the twelve circles below so the sum of each side of the triangle is 36. I will give you a head start by placing some of the numbers for you. (The numbers may be used once only).