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Larry had 151 erasers and Kenneth had 109 erasers. When each one gave away the same number of erasers, Larry then had 2 times as many erasers as Kendra. How many erasers did each friend give away?

 Apr 15, 2021
 #1
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151 - s   = (2)( 109-s)   given

151 - s = 218 - 2s

s = 218-151 = 67    amount given away  

 Apr 15, 2021
 #2
avatar+180 
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Larry had 151 erasers and Kenneth had 109 erasers. When each one gave away the same number of erasers, Larry then had 2 times as many erasers as Kendra. How many erasers did each friend give away?

 

Let's start with the variable "x". We don't know how many erasers they each gave away but we do know that they gave away the same amount of erasers and that after giving away these erasers Larry had 2x the amount.

 

That gives us an equation like this 151-x=2(109-x)

 

Then we simplify it to 151-x=218-2x

 

                                          x = 67

 

Hope this helps!

 Apr 15, 2021

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