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Question

Tom, Dorothy, and Sammy went on a vacation and agreed to split the costs evenly. During their trip Tom paid 105, Dorothy paid 125, and Sammy paid 175. In order to share costs equally, Tom gave Sammy t dollars, and Dorothy gave Sammy d dollars. What is t-d$?

Accepted Answer

The total amount paid is 105 + 125 + 175 = 405. To get how much each should have paid, we do 405/3 = 135. Thus, we know that Tom needs to give Sammy 30 dollars, and Dorothy 10 dollars. This means that t-d = 30 - 10 = 20.