Question 485610
1)   Attendance at a ball game was 400 people.  Student tickets cost $2 and adult tickets $3.  $1050 was collected in ticket sales, how many of each were sold.
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s + a = 400
2s + 3a = 1050
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2s + 2a = 800  1st eqn times 2
2s + 3a = 1050
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-a = -250
a = 250 adult tix
s = 150 student tix
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2)  Find two consecutive integers such that the sum of the first and three times the second is 55.
n + 3(n+1) = 55
n + 3n + 3 = 55
4n + 3 = 55
4n = 52
n = 13
--> 13 & 14