A box contains 39 total coins and bills worth $36.60 all coins are either five dollar bills or nickels how many of each type are there?
Let the number of nickels =N Let the number of $5 bills =F
N + F = 39..................................(1) 0.05N + 5F = $36.60..................(2)
Sub (1) into (2) and you should get: N = 32 Nickels F = 7 $5 Bills
Check: 32 x 0.05 =$1.60 7 x $5 =$35.00
