Answer:

a...Mumbai Weather Today (1–3 days) Heavy rain (total 75mm), heaviest during Mon night. Warm (max 29°C on Wed afternoon, min 28°C on Tue night). Winds decreasing (near GALES from the SW on Mon afternoon, light winds from the SW by Thu morning).

b....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.

c....At srinagar temperature was -5 degree Celsius on Monday and then it dropped by 2 degree Celsius on Tuesday .

as it dropped by 2 it is -2

=>temperature on tuesday = -5 +(-2)

                                             = -5-2

                                              = -7 celcius

after that on wedneday,it rose  4 degrees

as it rose 4 degrees it is +4

temperature on wedneday = -7 +4

                                           = -3 celcius