Problema Solution
Kevin and Randy have a jar containing 48 coins, all of which are either quarters or nickels. The total value of the coins in the jar is $6.80. How many of each type of coin do they have?
Answer provided by our tutors
let
x = number of quarters
y = number of nickles
1 quarter = $0.25
1 nickle = $0.05
Kevin and Randy have a jar containing 48 coins
x + y = 48
the total value of the coins in the jar is $6.80
0.25x + 0.05y = 6.80
by solving the system of equations
x + y = 48
0.25x + 0.05y = 6.80
we find
x = 22 quarters
y = 26 nickles
Kevin and Randy have 22 quarters and 26 nickels.