12:18 is a 2:3 ratio of pink to blue If this ratio continues for the population of the box; the ratio has 5 parts. 100/5 = 20. Each part is 20. 2 * 20 = 40 3 * 20 = 60 P:B = 40:60 40 pink chips and 60 blue chips
for these kinds of problems the outside angle always equals the opposite 2. meaning angle x=64+70 which is 134 degrees. you can double check this because all triangles equal 180 degrees. meaning that the last angle in the triangle is 46. 46+70+64=180.
