Question

Mr. Ocana drove 15 miles to go to work last week. Due to construction on the road, this week he drove 21 miles to go to work. What is the percent increase in the number of miles he drove to work this week? О 40% 50% ООО 60% O 70%

Answer 1

40%

Explanation:

In this case, what we must do is calculate the percentage that represents 21 miles, assuming that 100% is 15 miles, like this

`21\cdot(100)/(15)=140\text{\%}`

Now we subtract 100% from this value, like this:

`140\text{\%}-100\text{\%}=40\text{\%}`