Question

Robin has 6 rolls of pennies containing 50 coins each, 5 rolls of nickels containing 40 coins each, 4 rolls of dimes containing 50 coins each, and 3 rolls of quarters containing 40 coins each. How much money does he have?

Answer 1

Robin has $63.00 from all of the coins.

Answer 2

`6(50)(0.01)+5(40)(0.05)+4(50)(0.1)+3(40)(0.25) \\ \\ =3+10+20+30 \\ \\ =\boxed{\$63}`