Question

a piggy bank containing only quarters has a mass of 850 grams when empty and 7822 grams when filled if a quarter weighs 5.6 grams estimate the money

Answer 1

number of quarters= (7822-850)/5.6 = 1245

multiply that by 0.25 (worth of a quarter) to get the amount of money in US dollars

1245*0. 25=311.25$

Answer 2

I thinks the answer is 12.45