We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
-3
53
3
avatar+64 

 HALP

 Jun 22, 2019
 #1
avatar+101813 
+2

Let the original cost per person  = C

 

So......the revenue collected is just   20C

 

When 10 more join, the cost per person is  (C - 1.50)

And the revenue is 30 (C - 1.50)

 

And the revenue (cost for renting the bus)  is the same in both cases....so

 

20C  =  (30) (C - 1.50)    simplify

 

20C  = 30C  -  45   subtract  30C from both sides

 

-10C  = - 45

 

C = 45/10  = 4.50

 

So.....the cost of renting the bus  =   20 C  =  20 * 4.50  =   $90

 

 

 

cool cool cool

 Jun 22, 2019
 #2
avatar+64 
-3

WOW! i had so much trouble trying to make the equation! THX CPHILL

CuteDramione  Jun 22, 2019
 #3
avatar+101813 
0

Welcome....

 

cool cool cool

CPhill  Jun 22, 2019

5 Online Users