Let x represent the total chips that in the bag.
We know that each chip weight 0.12 grams, and there are 228 grams in total, so:
0.12x=228
Divided 0.12 to each side
0.12x/0.12=228/0.12
x=1900 chips. As a result, there are 1900 chips in the bag. Hope it help!