math
posted by john .
a large jar contains 500 marbles suppose you have an identical empty jar how would you find the mass of one marble

1. Find the masses of each jar.
2. Subtract the empty jar from the jar with marbles.
3. Divide by 500!
4. Tada!
Ex: Jar w/ marbles: 600 grams
Empty Jar: 100 grams
Jar w/ marbles  Jar = 500 grams
500 grams/ 500 = 1 gram (one marble = 1 gram)