Answer:
Step-by-step explanation:
First add 45 and 78 to find the total weight in grams.
45 + 78 = 123
Then find the weights that will work 1 100, 2 10, 3 1,
1175
c=100 the angles in a hexagon =720 so subtract all the angles from 720. 720-155-80-115-160-110=100
