Problema Solution
Joe has a collection of nickles and dimes thats worth $5.65. If the number of dimes were doubled and the number of nickles were increased by 8 the value of the coins would be $10.45. How many dimes does he has?
Answer provided by our tutors
5n + 10d = 565
5(n+8) + 10(2d) = 1045
5n+40 + 20d = 1045
5n + 20d = 1005
10d = 440
d = 44
5n + 440 = 565
5n = 125
n = 25
Joe has 25 nickels, 0 nickles (there is no such thing), and 44 dimes.