Answer:
40 persons
Explanation:
Given:
Total cost of trip = $560
Number of people Decide not to go = 5 people
raise cost = $2
Assume:
Number of people wants to go = a
Cost per person = b
So, a x b = $560 , b= 560/a
After people decided not to go ,
Total number of people = (a-5)
New cost = (b+2)
So , total cost = (a-5)(b+2) = $560
ab +2a -5b -10 = 560 , where ab = $560
2a -5b = 10
2a -5b = 10
By putthing value of b
2a - 5 (560/a) = 10
2a - (2800 / a) = 10
2a² - 2800 = 10a
2a² -10a - 2800 = 0
a= 40
Total 40 persons wants to go.
