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Addition

A family had ...

Question

A family had dinner in restaurant and paid 30 $f o r f o o d . T h e y a l s o h a d t o p a y$ 9.5\% $s a l e t a x a n d$ 10\% $f o r t h e t i p . H o w m u c h d i d t h e y p a y f o r t h e d i n n e r ? W r i t e a n s w e r i n t h e f o r m o f n e a r e s t i n t e g e r . (i n$ \$$)

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Solution

The cost of the food $=$ 30$
$9.5 %$ sales tax on the food $= \frac{9.5}{100} \times 30 = 2.85$
$∴$ The amount becomes $30 + 2.85 = 32.85$
$10 %$ tip on the amount after sales tax $= \frac{10}{100} \times 32.85 = 3.285$
Total amount $= 32.85 + 3.285 =$ 36.125 \approx $36$

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