if you need 25th and of resin how much of Oart A do u need to weight out?

7- Resin is made up of a "Part A" and a "Part B" that are mixed to a specific mix ratio. The mix ratio for a resin system is give as 100:56 which identifies Part A as being 100 and Part B as being 56. The mix ratio formula is A/(A+B) X (weight of required resin) = Part A For Part B the formula is B/(A+B) X (weight of required resin) = Part B If you need 25 grams of resin how much of Part A do you need to weigh out