Answer:
125 adults
175 children
Step-by-step explanation:
3900=8c+20a
300=c+a
c=300-a
substitute
3900=8(300-a)+20a
reduce
3900=2400-8a+20a
1500=12a
a=125 adults
substitute for a
c=300-125
c=175 children
B
Those lines both make up the tip of the triangle figure...
Answer: im am not sure but try your best
32
80 x 40 = 3,200
3,200 / 100 = 32
7672.50
7500×0.23%=17.25
17.25×10=172.50
7500+172.50=7672.50
