Answer:
The answer is 10
Step-by-step explanation:
a + 5 =15
15-5=10
Given:
Number of passengers seated in the roller coaster = 21
Empty seats = 3
Number of cars in roller coaster = 4 (each with the same number of seats)
To find:
An equation that can be used to determine the number of seats in each car.
Solution:
Let s be the number of seats in each car.
Total number of seats in 4 cars = 4s
Using the given information,
Total number of seats = Occupied seated + Empty seats
= 21 + 3
= 24
Now, the required equation is

Therefore, the required equation is
.
Divide both sides by 4.


Therefore, the number of seats in each car is 6.
Answer:
$10.71
Step-by-step explanation:

y × 35 = 3.75 × 100
35y = 375
35y ÷ 35 = 375 ÷ 35

y = 10.7142857143
10.7142857143 round to 10.71