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31 January, 05:46

Belinda's mother took the family out to dinner. The food bill came to $72.00. The sales tax is 6% of the cost of food. As a tip, Belinda's mother left 20% of the original food bill. What was her total cost?

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  1. 31 January, 06:11
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    To calculate final cost you need to add tax and tip. Because you tip on the food bill without tax, you just add these two.

    72 * 0.2 = 14.4 - > tip

    72 * 0.06 = 4.32 - > tax

    72 + 14.4 + 4.32 = 90.72

    So the total cost was $90.72

    You can find that faster:

    72 * 1.26 = 90.72
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