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What percentage of the original bill was the tip ? Round your answer to the nearest whole percent

What Percentage Of The Original Bill Was The Tip Round Your Answer To The Nearest Whole Percent class=

Sagot :

We can solve this question by applying the rule of three:

[tex]\begin{gathered} \text{ \$37.92 ------- 100\%} \\ \text{ \$7.08 ------- x } \end{gathered}[/tex]

By cross multiplying these values, we have

[tex]\text{ \$37.92 }\times x=\text{ \$7.08 }\times\text{ 100\%}[/tex]

since we need to isolate x, by dividing both sides by $37.92, we get

[tex]x=\frac{\text{ \$7.08}\times\text{ 100\%}}{\text{ \$37.92}}[/tex]

So, x is given by

[tex]x=18.67\text{ \%}[/tex]

Therefore, by rounding to the nearest whole percent, the answer is 19 %

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