Question

4. Your average electricity bill is $72.40. This month, your bill was $82.50. What

Answer 1

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

$82.5=72.4\cdot\dfrac{x}{100}$

Solving for x, we have

$x=\dfrac{8250}{72.4}\approx 114$

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