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

Answer:

The temperature decreased by 9 °F in 6 days.

Step-by-step explanation:

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

Given:

Average daily temperature decreases by $1\frac{1}{2}$ °F.

Decrease of temperature in 1 day = $1\frac{1}{2}$= 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, $1.5x=9$

$x=\frac{9}{1.5}$

$x=6$

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