Answer:
$680
Explanation:
Provided cost per page
First time typing = $5 per page
Page Revised = $3 per page for each revision
Now, manuscript has 100 pages out of which
40 were revised once which means
Cost for these 40 pages revised once = $5 + $3 per page, as would be printed originally and then revised once.
= 40 [tex]\times[/tex] $8 = $320
Cost for 10 pages revised twice
= cost per page = $5 + $3 + $3 = $11
$5 for first time typed, $3 for each revision since revision is 2 times
Cost for 10 pages = 10 [tex]\times[/tex] $11 = $110
Cost for remaining 50 pages = 100 - 40 - 10
= $5 per page as were only once typed with no revision
= $5 [tex]\times[/tex] 50 = $250
total cost of 100 pages = $320 + $110 + $250 = $680