Question

suppose that during one period of extreme cold the average daily temp decreased 1 1/2 Fahrenheit each day how many days did it take for the temp to decrease by 9 degrees Fahrenheit for barrow Alaska

Answer 1

The temperature decreased by 9 °F in 6 days.

Explanation:

Let the number of days it takes for the temperature to decrease by 9 °F be
`x`.

Given:

Average daily temperature decreases by
`1(1)/(2)` °F.

Decrease of temperature in 1 day =
`1(1)/(2)`= 1.5 °F.

∴ Decrease in temperature in x days is
`1.5x`.

Now, as per question, decrease in temperature in 'x' days is 9 °F.

Therefore,
`1.5x=9`

`x=(9)/(1.5)`

`x=6`

Therefore, the temperature decreased by 9 °F in 6 days.