Kevin and randy muise have a jar containing 68 coins, all of which are either quarters or nickels. the total value of the coins in the jar is $13.40. how many of each type of coin do they have?

For this case, the first thing we must do is define variables:

x: number of quarters

y: number of nickels

We now write the system of equations:

x + y = 68

0.25x + 0.05y = 13.40

Solving the system we have:

x = 50

y = 18

Answer:

they have:

quarters = 50

nickels = 18