First, we have that Chance has $4 in quarters. We know that one quarter equals 25 cents, then for $4 we have:
Then, Chance has 16 quarters, each one weighs 5.67g, then:
Now, Blake has $6 in dollar coins, each weighs 8.1g, then:
therefore, Blake has 48.6g of the coins, Chance has 90.72g of the coins.
Chance has the greatest mass.