+0  
 
-3
192
3
avatar+75 

 HALP

 Jun 22, 2019
 #1
avatar+106535 
+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+75 
-3

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

CuteDramione  Jun 22, 2019
 #3
avatar+106535 
0

Welcome....

 

cool cool cool

CPhill  Jun 22, 2019

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