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avatar+1791 

If I give my brother $5$ dollars, then we will have the same amount of money. If instead he gives me $10$ dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?

 Nov 4, 2023
 #1
avatar+36920 
+1

b  = brother's money     y = your money 

y-5 = b + 5      Given        re-arrange to   y = b + 10 

y+10 = 2 ( b-10)     Given        Sub in y = b+10

(b+10) + 10 = 2b -20

b+20 = 2b -20 

b = 40 dollars                 y = 50 dollars

 Nov 5, 2023

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