For having a manuscript typed at a certain typing service are $5 per page for the first time a page is typed and $3 per page each time a page is revised. if a certain manuscript has 100 pages, of which 40 were revised only once, 10 were revised twice, and the rest required no revisions, what was the total cost of having the manuscript typed?

total cost of having the manuscript type is $680

Explanation:

given data

first time = $5 per page

revised = $3 per page

manuscript = 100 pages

revised only once = 40

revised twice = 10

to find out

total cost of having the manuscript typed

solution

we know for 1st time page  cost is

page 1st time = 100 - 40 - 10  = 50 page

cost 1st time = 50 × $5 per page = $250    1

and

for first revision

first revision page = 40

cost of first revision = 40 × ( first time $5 + first revision $3 )

cost of first revision = 40 × 8 = $320       2

and

for second revision

second revision page = 10

second revision cost = 10 ×  ( first time $5 + first revision $3 + second revision $3  )

second revision cost = 10 × 11 = $110     3

add all 3 equation

total = $250  +  $320 + $110

so total cost of having the manuscript type is $680

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