Question

The temperature is increasing steadily at a rate of 3°F every five hours. By how much does the temperature change each hour?

-3/5°F
3/5°F
-5/3°F
5/3°F

Answer 1

3°F = 5 hr
3/5 °F = 1 hr
since temp is increasing, ans is 2

Answer 2

Answer:
`(3)/(5)^(\circ)\ F`

Explanation:

We know that in integers , we use minus (-) sign to show decrease , fall or loss and no sign to plus (+) sign to show increase , rise or profit.

Given : The temperature is increasing steadily at a rate of 3°F every five hours.

i.e. Change in every 5 hours = 3°F

By Unitary method , change in every 1 hour =
`(3)/(5)^(\circ)\ F`

Since, temperature is increasing , so the temperature change each hour is written as
`(3)/(5)^(\circ)\ F` [without any sign]