Question

(b) The temperature at 1 p.m. was 10°C above zero. If it
decreases at the rate of 2°C per hour until 10 p.m., at
what time would the temperature be 6°C below zero.​

Answer 1

Answer:

on 1 pm = 10'

time on -6° c

temperature will decrease to -6° c = 16° c

if in one hour temperature will decrease 2° c then 16° c ÷ 2 = 8 hours

time will

1 p.m + 8 hours = 9 pm