help solve

 

A candy bar and a piece of bubble gum together cost 1.50.  The candy bar costs a dollar more than the bubble gum.  How much does the piece of bubble gum cost, in cents?   

 

                                                                      C + B  =  1.50  

                                                                      C – B  =  1.00  

 

Just subtract the second from the first               2B  =  0.50  

 

                                                                            B  =  0.25  =  25¢  

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