Problema Solution
Bob paid 76.60 pesos for a pencil, a pad paper and a pen. The paper costs 7.80 pesos more than the pencil and the pen costs 12.40 pesos more than the pad paper. Find the cost of each of the three items.
Answer provided by our tutors
Pencil: x
Pad paper: (x+7.80)
Pen: (x+7.80+12.40)
So the equation is
x + (x+7.80) + (x+7.80+12.40) = 76.60
x = 16.2
So
Pencil: 16.20 pesos
Pad paper: 24.0 pesos
Pen: 36.40 pesos