Answer: 0.664
Step-by-step explanation: 1.666/0.664=2.5
(400,000,000) + (30,000,000) + (200,000) + (90,000) + (100)
Cost of 12 copies that Melissa needs to pay = $0.66
Then
Cost of 1 copy that Melissa needs to pay = (66/12) dollars
= 11/2 dollars
Now
The cost of 56 copies that Melissa has to pay =(11/2) * 56
= 11 * 28 dollars
= 308 dollars
So Melissa needs to pay $308 for 56 copies.<span>I hope the procedure is clear enough for you to
understand. In future you can use this procedure to solve similar problems in future.</span>
23.25 hours because if you can divide 279 hours (michael) divided by 12, you would get 23 hours and 25minutes