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Sam had 90 more stickers than Jim. After Sam gave 140 stickers to his brother and 30 stickers to Jim, Sam had 1/2  as many stickers as Jim. How many stickers did Sam have at first? 

 Aug 27, 2023
 #1
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Sam had 90 more than  Jim translates to :

S = J + 90         

 

He gives 140 to his  brother and 30 to Jim and  now  has (1/2) of what Jim has

 

S - 140 - 30  =  (1/2)J       

 

(J + 90)  - 140 - 30  = (1/2)J             {  remember  S =  J + 90 }

 

J -  80  = (1/2)J

 

J - (1/2)J = 80

 

(1/2)J = 80         

 

J = (2/1) * 80  =   160

 

S = 160 + 90  =  250  at first

 

 

cool cool cool

 Aug 27, 2023

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