Let us say,
Price of adult ticket=x
Price of child ticket =y
On the first day ticket sales the school sold 4 adult tickets and 12 child tickets for total of $80
4x+12y=80.............(1)
took $41 on the second day by selling 1 adult ticket and 10 child tickets
1x+10y=41.............(2)
x=41-10y..............(3)
plugging the value of x from equation (3) in equation (1) we get,
4(41-10y)+12y=80
164-40y+12y=80
84=28y
y=3
plugging this value of y in equation (2) we get,
1x+10(3)=41
x=11
Price of adult ticket= 11 dollars
Price of child ticket = 3 dollars
Answer:
141.18
Step-by-step explanation:
Answer:
the answer is 71.2
Step-by-step explanation:
4×4=16
6.9×2=13.8
13.8×4=55.2
55.2+16=71.2
Answer:
- boat: 16 mph
- current: 4 mph
Step-by-step explanation:
speed = distance / time
The rate downriver is (60 mi)/(3 h) = 20 mi/h.
The rate upriver is (60 mi)/(5 h) = 12 mi/h.
The rate of the boat in still water is the average of these:
(20 +12)/2 mi/h = 16 mi/h
The rate of the current is the difference between the boat speed and actual speed:
16 mi/h - 12 mi/h = 4 mi/h
