Question

Every year roughly 25,000,000 kilograms 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?

Answer 1

$20000 of zinc is cut every year

Answer 2

Worth of zinc is contained in hair cut in the united states is $ 20,000.

Explanation:

Given:

Weight of the hair cut in US = 25000000 kg

Weight of zinc in a kg of hair = 0.0002 kg

Cost of a kg of zinc = $ 4

To find: Worth of zinc is contained in hair cut in the united states

Since,

Weight of the hair cut in US = 25000000 kg

Weight of zinc in a kg of hair = 0.0002 kg

⇒ Weight of zinc in 25000000 kg of hair = 0.0002 × 25000000 = 5000 kg

Now, Cost of a kg of zinc = $ 4

⇒ Cost of 5000 kg of zinc = 4 × 5000 = $ 20000

Therefore, Worth of zinc is contained in hair cut in the united states is $ 20,000.