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Greg has 7 times as many bookmarks as Sean. If Greg gives 15 bookmarks to Sean, the two children will have exactly the same amount. How many bookmarks do they have altogether?

 Jun 15, 2022
 #1
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Sean  has S bookmarks

 

Greg has 7S

 

So    when Greg gives Sean  15  we have that

 

7S - 15  =  S + 15

 

7S - S  =   15 + 15

 

6S = 30

 

S = 30 / 6   = 5

 

7S    =  35

 

Together they have    5 +  35 =   40 bookmarks

 

cool cool cool

 Jun 15, 2022

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