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At the Galactic Workshop, Robby the Robot had 5 times as many zurks in his pile as Charlie the Cyborg. Robby gave 10 zurks to Charlie so they would each have the same amount. How many zurks do they have altogether?

 Jan 16, 2022
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R  =  5 · C                                   

R - 10  =  C + 10                        

 

Combining:  5C - 10  =  C + 10                   

                           4C  =  20

                             C  =  5    --->     R = 5C    --->     R = 25

 

Together:  R + C  =  .....

 Jan 16, 2022

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