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1.Label the big triangle in the middle as 'B', the identical ones either side of it as 'A' and label the smallest as 'C'.

2.Always start with either 'C' or 'A', counting up how many squares are inside each triangle. Each 'A' has 25, and 'C' has 12.5. Already you've found 2 of the triangles, each 'A' = 25/100 and 'C' = 12.5/100

3. Add up both of the 'A' triangle which gets you to 50, and add 50 to 12.5. This takes you to 62.5. Now subtract 100, which is the area of all the triangles put together, and you have the answer, 37.5.

THE FINAL ANSWER!
A = 25/100
B = 37.5/100
C = 12.5/100

YAAAAYYY!