February 26, 2017

Homework Help: Math

Posted by Miranda on Thursday, May 31, 2012 at 12:23am.

Casey paid $45 for one new tire and one used tyre for his bicycle. The new tire costs $17 more than the used tire. How much did the new tire cost?

I have worked out the answer in my head, ($31) but is there a particular formula I can use or follow.

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