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The entrance fee at Purple Dinosaur Carnival was 4 dollars each and each ride cost 80 cents.

 

 Feb 21, 2021
 #1
avatar+939 
0

Let the number of rides you went on be x.

 

4 + 0.8x= 12 + 0.3x

 

0.5x = 8

 

x = 16

 

You went on 16 rides. 

 Feb 21, 2021
 #2
avatar+30677 
0

 

 

 4 + .8r    = 12 + 0.3r

.5r = 8

r = 16

 Feb 21, 2021

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