To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat.

Question

need full explanation i did find this question but it was not explained the calculations and where the numbers came from.

Answer 1

I did explain the numbers. Post the answer and ask about each step you don't understand but explain fully what you don't understand.