contestada

Every year, roughly 25,000,000 kg of hair is cut in the United States. Each kilogram of hair contains about 0.0002 kg of zinc, and each kilogram of zinc is worth about 4 dollars. How many dollars worth of zinc is contained in hair cut in the United States every year?

Respuesta :

$20,000

25,000,000 x 0.0002 = 5,000

5,000 x $4.00= $20,000