Problema Solution
Arnold has a poketful of nickles and dimes that equal one dollar. He has half as many
Dimes as nickles. How many nickles does he have?
Answer provided by our tutors
x, dimes
y, nickels
x = y/2
1 = (y/2)(0.1) + (y)(0.05)
2 = 0.1y + 0.1y
2 = 0.2y
0.2y/0.2 = 2/0.2
y = 10 nickels