Answer:
.
Step-by-step explanation:
So (a) stands for adult and (c) is for child.
10a+5c=1200(total cost)
a+c=170(for tickets sold)
There are 70 adult tickets and 100 child tickets.
21 would be ur answer
69+21=90
Marguerite drove 50 miles in 1.2 hours so sam drove 25 miles in 1hour
Hope it helps