SOLUTION: In a theater there are1200 seats. The number of seats in each rows is 10 less than the numbers of rows? How many seats are there in each rows?

Question 1088080: In a theater there are1200 seats. The number of seats in each rows is 10 less than the numbers of rows? How many seats are there in each rows?
Found 2 solutions by jorel1380, MathTherapy:
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
Let s be seats, and r be rows. Then s=r-10. So
r(r-10)=1200
r�-10r-1200=0
(r+30)(r-40)=0
r=-30 or 40
☺☺☺☺
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!
In a theater there are1200 seats. The number of seats in each rows is 10 less than the numbers of rows? How many seats are there in each rows?

Let number of seats in each row, be S
Then number of rows = S + 10
We then get the following NUMBER-OF-SEATS equation: S(S + 10) = 1,200

(S - 30)(S + 40) = 0
S, or OR S = - 40 (ignore)
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