Problema Solution
Each piece of lead for a mechanical pencil has a thickness of 0.5mm and is 60 mm long. A package of lead contains 4 pieces and cost $0.43 Find the total length in centimeters of the lead in the package and find the cost per centimeter for the lead.
Answer provided by our tutors
the total length in centimeters of the lead = 4*60 mm = 240 mm = 24 cm
the cost per centimeter for the lead = $0.43/24 cm = $0.018 per centimeter