First, we have that Chance has $4 in quarters. We know that one quarter equals 25 cents, then for $4 we have:
[tex]\begin{gathered} 4\text{ dollars = 400 cents} \\ \Rightarrow\frac{400}{25}=16 \end{gathered}[/tex]Then, Chance has 16 quarters, each one weighs 5.67g, then:
[tex](16)\cdot5.67=90.72g[/tex]Now, Blake has $6 in dollar coins, each weighs 8.1g, then:
[tex](6)(8.1)=48.6g[/tex]therefore, Blake has 48.6g of the coins, Chance has 90.72g of the coins.
Chance has the greatest mass.