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Devin bought boxes of thank you cards and get well cards. The thank you cards came in boxes of 4 and the get well cards came in boxes of 6. Devin bought 8 boxes and got a total of 36 cards. How many boxes of each type of card did he buy

 May 1, 2020
 #1
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No need to guess and check....we can solve directly

 

Let the boxes of thank you cards  = x

Let the boxes of get well cards  = 8 - x

 

So  we can solve this

 

4x + 6 ( 8 - x)  = 36     simplify

 

4x + 48 - 6x  = 36

 

-2x + 48  =  36        subtract 48 from both sides

 

-2x = -12      divide both sides by -2

 

x =6 =  boxes of thank you cars

8 - 6 = 2 boxes of get well cards

 

 

cool cool cool 

 May 1, 2020

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