Question

6. A certain freezing process requires that room temperature be lowered from 40°C at
the rate of 5°C every hour. What will be the room temperature 10 hours after the
ter
process begins?​

Answer 1

Answer:

• -10 °C is the required temperature

Step-by-step explanation:

Given:-

• Current Temperature of Room = 40°C
• Rate of temperature decreasing per hour = 5°C

To Find:-

• Temperature of room after 10 hours

Solution:-

Since it is given that the present or current temperature of room is 40°C & the rate of temperature decreasing is 5°C .We have to calculate the temperature of room after 10 hours .

→ Temperature of Room after 10 hour = 10×5

→ Temperature of Room after 10 hour = 50 °C

So, the temperature of the room decreased by 50°C .

So , the temperature of room after 10 hours wI'll be 40°C - 50°C = -10 °C .

• Hence, the temperature of room after 10 hours will be - 10 °C.

Answer 2

Question:-

• A certain freezing process requires that room temperature be lowered from 40°C at the rate of 5°C every hour. What will be the room temperature 10 hours after the process begins?

To Find:-

• Find the room temperature after 10 hours.

Solution:-

Given ,

• Present temperature of room = 40°C

• Rate of temperature decreases 5°C per hour

First ,

We have to find how many °C will decrease in 10 hours:-

$\sf\longrightarrow \: 5 \times number \: of \: hours$

$\sf\longrightarrow \: 5 \times 10$

$\sf\longrightarrow \: 50°C$

Now ,

We have to subtract 50°C from the room current temperature:-

$\sf\longrightarrow \: 40 - 50$

$\sf\longrightarrow \: - 10°C$

Hence ,

• - 10°C is the temperature after 10 hours