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Juan collected 5 times as many rocks as Will. When Juan gave Will some of his rocks, they each had 15. How many rocks had Juan given to Will?

 Apr 15, 2021
 #1
avatar+31654 
+1

j = 5w        

s = 'some'

 

j - s  =  15     and      w + s = 15      sub in 5w = j

5w - s = 15

 

Add red equations

6w = 30

w = 5   originally     he wound up with 15  so juan gave him 10 = 'some'

 

 

 

ANOTHER method.....they both end up with 15 =  30 total

  j + w = 30

  5w + w = 30

  w = 5              then        he wound up with 15  so juan gave him 10 = 'some'

 Apr 15, 2021
edited by ElectricPavlov  Apr 15, 2021
 #2
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So the answer 5?

Guest Apr 15, 2021
 #3
avatar+31654 
+1

The Q asks      How many rocks had Juan given to Will?   

ElectricPavlov  Apr 15, 2021
 #4
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Oh it's 10

Guest Apr 15, 2021

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