Question

A cooling machine starts cooling the room at the rate of 5degree Celsius per hour. If the temperature of the room is 28 degree Celsius,find the number of hours it takes to lower down the room temperature to -7 degree Celsius​

Answer 1

Answer:

7 Hours

Step-by-step explanation:

Step-1

For this we need to find the number of numbers between 28 and (-7)

Which gives us the answer of 35

Step-2

We can convert it to the ratio of

1 : 5

x : 35

Where 'x' is the number of  hours it would take to cool the room by 35 degrees.

Step-3

We then cross multiply and get:

5x = 35

x = 35/5

x = 7

Therefore it would take 7 hours to cool the room and set the temperature to -7 degrees Celsius.

Answer 2

Answer:

I don't know ok please don't make me angry