Question

The cost of chartering a bus for the great america trip was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost of chartering the bus? Please help me with an explanation

Answer 1

Answer:

69

Step-by-step explanation:

Answer 2

Answer:

$ 540

Step-by-step explanation:

Let the initial cost of bus chattering be x.

Therefore,

Average cost for each when 20 students go

= x/20

Now,

New number of students = 30

Average cost for each now = x/30

According to question,

The average cost decreases by $9

x/20 - x/30 = 9 (Taking LCM)

=> (3-2)x/60 = 9

=> x/60 = 9

=> x = $ 540