They answer is 12.t obeys
Average temperature = (12 - 8 + 3 + 6 - 15) / 5 = -2/5 = -0.4
Answers are: A, C, D
Note how
(3/20)*20 = 0.15*20 = 3
0.15*20 = 3
(15/100)*20 = 0.15*20 = 3
all expressions lead to the same result of 3
another thing to notice
3/20 = 15/100 = 0.15 = 15%
which are multiple ways to say the same thing just in a different form
C. Both can be used to withdraw money from ATMs.