SOLUTION: 12 apartments rent totals 4950. 2 br is 450 per apt 1br is 360 per apt How many 2br are rented?

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Question 614067: 12 apartments rent totals 4950.
2 br is 450 per apt
1br is 360 per apt
How many 2br are rented?
Answer by nerdybill(7384) About Me  (Show Source):
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12 apartments rent totals 4950.
2 br is 450 per apt
1br is 360 per apt
How many 2br are rented?
.
Let x = number of 2br apartments rented
then
12-x = number of 1br apartments rented
.
450x + 360(12-x) = 4950
dividing both sides by 90:
5x + 4(12-x) = 55
5x + 48-4x = 55
x + 48 = 55
x = 7