A jar contains n nickels and d dimes. There are 22 coins in the jar, and the total value of the coins is $1.60. How many nickels and how many dimes are in the jar?
A jar contains n nickels and d dimes. There are 22 coins in the jar, and the total value of the coins is $1.60. How many nickels and how many dimes are in the jar?
n + d ==22........................................(1)
0.05n + 0.10d ==1.60......................(2), solve for d, n
Use substitution to get:
d==10 dimes and n==12 nickels.
