Question

A mine extracts 2 metric tons of coal in an hour. The mine uses ton of the extracted coal every hour to generate electricity for the mine and sells the rest. If t is the number of hours spent mining, which expression represents the amount of ore sold? How much ore can the mine sell after extracting ore for 12 hours?

Answer 1

1/4

Answer 2

\[1.75t=x\] can represent the number of coal able to be sold every hour.
this is because: The mine uses \[1/4\] ton every hour, but they mine 2 tons. Thus: \[2-1/4\]

Answer 3

plug in the number of years for t, then you have your answer

Answer 4

so 2t -1/4t = ?

Answer 5

I meant d.i.c.k