Horatio has 57 coins consisting of nickels, dimes, and quarters. he has twice as many dimes as
nickels. if the coins are worth a total of $7.25, which system of equations is used to determine
how many of each coin horatio has?
in + d + 9 = 57
n = 20
5n + 10d + 259 = 7.25
n + d + 9 = 57
n = 2d
0.05n + 0.100 + 0.259 = 7.25
nt d + 9 = 57
d = 2n
5n + 10d + 259 = 7.25
nd + 9 = 57
d = 2n
0.05n + 0.10d + 0.259 = 7.25