P + N = 8, where P = pennies and N = nickels. If the value of the coins is 28 cents, what other equation is necessary to find the number of each coin

Respuesta :

Answer:

Step-by-step explanation:

To find the number of each coin, we need another equation that relates the values of the coins to their quantities. Since we know the value of each penny is 1 cent and the value of each nickel is 5 cents, we can write the following equation:

1P + 5N = 28

This equation represents the total value of the coins, where 1P represents the value of the pennies (P) and 5N represents the value of the nickels (N). By solving this system of equations simultaneously, we can determine the values of P and N, and thus find the number of each coin.

Answer:

P+5N=28

Step-by-step explanation:

P + N = 8

p+5N=28

solve : 4N=20

N=20/4=5

substitute: P+N=8

P+5=8

P=8-5=3

3 pennies and 5 nickels