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4. Your average electricity bill is $72.40. This month, your bill was $82.50. What
percentage of normal was your bill this month?​

Respuesta :

We have to express 82.50 as a certain percentage of 72.40. In other words, we have to write

[tex]82.5=72.4\cdot\dfrac{x}{100}[/tex]

Solving for x, we have

[tex]x=\dfrac{8250}{72.4}\approx 114[/tex]

So, this month's bill was about 114% of the normal bill.

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