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Ryan finds a video game and a movie DVD that he wants to buy.ItemPrice with taxVideo game$33.85$16.29DVDHe wants to know how much it will cost to buy both items. Since $33.85 is about $34 and $16.29 is about $16, headded $34 and $16 mentally and got $50. How should Ryan compensate to get the exact sum?

User Jmh
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1 Answer

4 votes

The total cost will be given by:


\begin{gathered} T=Cd+Cv \\ where\colon \\ Cd=33.85 \\ Cv=16.29 \\ T=33.85+16.29 \\ T=50.14 \end{gathered}

Which is basically subtract 15 cents and then add 29 cents

User Ironpaw
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