The temperature at 12 noon was 10°C above zero. If it decreases at the rate of 2 C per hour until midnight, at what time would the temperature
be 8 C below zero?
(1) 9:00 PM
(2) 9:30 PM
(3) 10:00 PM
(4) 11:00 PM
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2
Answer:
9 pm
Step-by-step explanation:
temp decrease by 2
let after x hrs temp be -8
So 10-2x= -8=> 18= 2x => x = 9 hrs which is 9 Pm
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