Question

Nick has 30 coins in his pocket. Some coins are nickels. Some are dimes. The total value of all of the coins in his pocket is $1.65. Let n=Number of nickels . Let d=Number of dimes . Complete each statement. The equation that represents the total number of coins is

Answer 1

X + y= 30
.05x + .10y= 1.65

n + d = 30
5n + 10d = 165

-5n - 5d = -150
5n + 10d = 165

5d = 15

d = 3 dimes

n + 3 = 30

n= 27 nickels