Question

Students Cost of land Cost of equipment Cost of mining and reclamation Time taken to mine the area
1 $5 $2 $2.00 per minute 5 minutes
2 $4 ? $2.00 per minute 6 minutes

If the sum of the total mining costs for Student 1 and Student 2 is $40, what is the cost of equipment for Student 2?
$4.00

$6.00

$7.00

$9.00

Answer 1

The cost for student 1 is:
5 + 2 + 2 \(\times\) 5
Sum with the cost for the student 2. Total equals 40. Solve for x.

Answer 2

i dont under stand

Answer 3

What do i divide?