A Little Help With This?

Question

A jar contains an equal number of pennies, nickels, and dimes. If he total value of the coins is 368 cents, how many pennies does the jar contained?

Answer 1

Let "p" represent the number of pennies, let "n" represent the number of nickels, and let "d" represent the number of dimes.

If the total value of the coins is 368 cents then:

p + 5n + 10d = 368

But p = n = d therefore we can replace "n" and "d" with "p":

p + 5p + 10p = 368

16p = 368

p = 368/16 = 23

There are 23 pennies