Question 1160226
L+U=16
205L+95U=2620
multiply top by -95 to eliminate U
-95L-95U=-1520
110L=1100
L=10 lower level for 2050
U=6 upper level for 570
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A+S=740
20A+10S=12000
-10A-10S=-7400
10A=4600
A=460 adults ($9200)
S=740-460=280 students ($2800)
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dimes are x
quarters are 2x
nickels are x+6
.10x+.25(2x)+.05(x+6)=4.85
.65x+0.30=4.85
.65x=4.55
x=7 dimes ($0.70)
x+6=13 nickels ($0.65)
2x=14 quarters ($3.50)