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Darius's bag contains 3 times as many marbles as Tommy's bag. If Darius gives 3 marbles to Tommy, the two boys will have the same number of marbles. What is the total number of marbles?

 May 20, 2021
 #1
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Let  the  number of  marbles   Tommy  has  =  N

Then  Darius has  3N

 

And  we  have  that

 

3N - 3   =  N  +  3

 

3N - N  =  3 + 3

 

2N  =  6

 

N  =  6/2   =   3

 

So....the toal number of marbles =  N + 3N   =  3  + 3*3   =   12

 

 

 

cool cool cool

 May 20, 2021

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