The temperature of Bangalore on a sunny day was 20°C in the morning.

1.	The temperature of Bangalore on a sunny day was 20°C in the morning. The temperature increased by 19°C by noon. It at that temperature for 5 hours & then decreased by 15°C. What would be the temperature of the city at 8 pmPlease answer this question I will mark them as brainlilist
Answer» Solution :- At 12 noon, the temperature = 10° C above zero The temperature is decreasing at 2° C per hour 8° C below zero = - 8° C So, total fall in temperature from 10° C to 0° C and from 0° C to - 8° C = 18° C Since the temperature falls 2° C in EVERY one hour. Therefore, to decrease 18° C, time TAKEN = 18/2 = 9 hours Present time is 12 noon so, the time when the temperature is - 8° C = 12 noon + 9 hours So, The time at which the temperature will be - 8° C = 9 PM At 9 PM, the temperature is - 8° C, the temperature at 12 MIDNIGHT will be = (- 8° C) + (- 2° C × 3 hours) = (- 8° C) + (- 6° C) = - 14° C So, at 12 midnight the temperature will be - 14° C.

The temperature of Bangalore on a sunny day was 20°C in the morning. The temperature increased by 19°C by noon. It at that temperature for 5 hours & then decreased by 15°C. What would be the temperature of the city at 8 pmPlease answer this question I will mark them as brainlilist

Answer»

At 12 noon, the temperature = 10° C above zero

The temperature is decreasing at 2° C per hour

8° C below zero = - 8° C

So, total fall in temperature from 10° C to 0° C and from 0° C to - 8° C = 18° C

Since the temperature falls 2° C in EVERY one hour.

Therefore, to decrease 18° C, time TAKEN = 18/2

= 9 hours

Present time is 12 noon so, the time when the temperature is - 8° C

= 12 noon + 9 hours

So, The time at which the temperature will be - 8° C = 9 PM

At 9 PM, the temperature is - 8° C, the temperature at 12 MIDNIGHT will be =

(- 8° C) + (- 2° C × 3 hours)

= (- 8° C) + (- 6° C)

= - 14° C

So, at 12 midnight the temperature will be - 14° C.