SOLUTION: In a theater there are 1200 seatS.The number of seats in each row is 10 less than the number of rows.How many seats are there in each row

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Question 1125667: In a theater there are 1200 seatS.The number of seats in each row is 10 less than the number of rows.How many seats are there in each row
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +n+ = number of rows
+n+-+10+ = seats in each row
——————-
I can say:
+n%2A%28+n+-+10+%29+=+1200+
+n%5E2+-+10n+-+1200+=+0+
+%28+n+-+40+%29%2A%28+n+%2B+30+%29+=+0+ ( by inspection )
+n+=+40+
And
+n+-+10+=+30+
There are 30 seats in each row