Question

In Phoenix, Arizona, the average temperature is 85 degrees Fahrenheit or higher during 25% of the year. During about how many weeks of the year is the average temperature below 85 degrees Fahrenheit?

Answer 1

Answer: 39 weeks

Explanation:

Given

The average temperature is
`85^(\circ)F` or higher

A year has 52 weeks

It is given 25% of the time-temperature is above
`85^(\circ)F`

So, in the remaining 75% of the weeks, the average temperature is less than
`85^(\circ)F`

No of weeks can be determined by

`\Rightarrow 75\%\ \text{of}\ 52\\\\\Rightarrow (75)/(100)* 52=39\ \text{weeks}`