Question

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?

Select one:

a.
P + 5N = 28

b.
5P + N = 28

c.
P + 28 = 5N

d.
(1 + 5)N = P

e.
8 + N = 28

Answer 1

a.

P + 5N 28

Explanation:

The value of the coins is 28 cents. This means that if one were to account for the total money, it would amount to 28. So one would multiply the number of nickles by 5, (because one nickel is 5 cents), and the number of pennies by 1, (because a penny is one cent). The one would add the resulting values up to attain 28. The equation given in option A represents that, hence it is the correct answer.