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20 December, 20:11

The bill for Dino's lunch was $19.45. He wanted to leave 20% of the total bill as a tip. How much should the tip be?

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  1. 20 December, 20:38
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    You could multiply 19.45 by 0.2 to solve for it, but if you're not using a calculator, then 19.45/5 would be much more convenient and easier.

    0.2 is 1/5 in fraction form, which is why we can do that.

    19.45/5 = 3.89

    Dino should leave $3.89 as a tip.
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