Question

temperature of a room at midnight is -4 degree Celsius. the room temperature increases at the rate of 2 degree Celsius per hour.find the temperature at 4a.m. and 12 noon.

Answer 1

➡HERE IS YOUR ANSWER⬇

Present Temperature = (-4)° C

Rate of increasing in Temperature = 2° C/hour

Midnight = 12.00 am

4.00 am - 12.00 am = 4 hours

In 4 hours increase of Temperature

= (4 × 2)° C

= 8° C

So at 4 am, Temperature be

= {(-4) + 8}° C

= 4° C

Again,

12 pm - 12 am = 12 hours

Temperature increasing in 12 hours

= (12 × 2) °C

= 24 °C

Hence, Temperature at 12 pm be

= (-4 + 24) °C

= 20 °C

⬆HOPE THIS HELPS YOU⬅

Answer 2

Answer:

Rate of increase of room temperature

Temperature of room at mid-night = -4℃

Temperature increase up to 4 am = 2×4=8℃

Temperature at 4 am =-4℃+8℃=4℃

Temperature increase upto 12noon=2×12=24

Temperature at 12 noon =

-4℃+24℃=20℃