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Miranda sold movie DVD’s for 12 dollars and television DVD’s for 9 dollars and has collected
1167 dollars from the sales of both. The number of movies sold is 4 less than 3 times the
number of television shows. How many movie DVD’s were sold, and how many
television DVD’s were sold?

 Apr 15, 2021
 #1
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Let the  number of  television DVDs  =  T

 

Let  the  number of  movie DVDs  =  3T - 4

 

So

 

9 T  +  12 ( 3T-4)   =   1167               simplify

 

9T  + 36T  -  48  =  1167

 

45T  =  1167 + 48

 

45T  =  1215

 

T = 1215 / 45  = 27  =  television  DVDs sold

 

3(27) - 4  =  77 = movie DVDs sold    

 

 

cool cool cool

 Apr 15, 2021

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