SOLUTION: <pre>I HAVE A WORD PROBLEM I NEED HELP WITH! A monthly water bill is calculated by using formula n = (8500c - 53850)/9 where n is the number of ga

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Question 38440: 
I HAVE A WORD PROBLEM I NEED HELP WITH! A monthly water 
bill is calculated by using formula 

                         n = (8500c - 53850)/9

where n is the number of gallons and c is the monthly 
cost. Solve for c and compute the billfor quanity of 
1100 gallons.

Thanks for your help.
Found 2 solutions by Nate, AnlytcPhil:
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
n+=+8500c+-+%2853850%2F9%29
n+%2B+%2853850%2F9%29+=+8500c
%28n+%2B+%2853850%2F9%29%29%2F8500+=+c
%281100+%2B+%2853850%2F9%29%29%2F8500+=+c
The cost is a whopping $0.83

Answer by AnlytcPhil(1810) About Me  (Show Source):
You can put this solution on YOUR website!

I HAVE A WORD PROBLEM I NEED HELP WITH! A monthly water 
bill is calculated by using formula 

                         n = (8500c - 53850)/9

where n is the number of gallons and c is the monthly 
cost. Solve for c and compute the billfor quanity of 
1100 gallons. 

                         n = (8500c - 53850)/9

Clear of fractions by multiplying both sides by 9

                        9n = 8500c - 53850

Isolate the term in c by adding 53850 to both sides

                9n + 53850 = 8500c

Divide both side by 8500

         (9n + 53850)/8500 = c

                         c = (9n + 53850)/8500

If you like you can factor 3 out of the numerator, 

                         c = 3(3n + 17950)/8500

but you might as well leave it 

                         c = (9n + 53850)/8500

To finish the problem substitute 1100 for n

                         c = (9·1100 + 53850)/8500

                         c = 7.5 or $7.50

Edwin
AnlytcPhil@aol.com