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A business rents bicycles and skates. Bicycle rentals cost $25 per day and skate rentals cost $20 per day. The business has 20 rentals today and makes $455. How man bicycle rentals did the the business have today?

 Feb 12, 2020
 #1
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Call the number of  bike rentals  = x

And the number of skate rentals =  20 - x

 

So

 

25x   + 20 ( 20 - x)   = 455     simplify

 

25x + 400 - 20x  = 455

 

5x + 400 = 455     subtract 400 from both sides

 

5x  = 55     divide both sides by 5

 

x  =11   = number of  bike rentals

 

 

cool cool cool

 Feb 12, 2020

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