TASK DEFINITION: In this task you are given a list of numbers and you need to find the average of each two consecutive values. The average of two numbers a and b is calculated as: (a + b) /2. The output should be a list of the averages of each two consecutive values. A list is presented with two brackets and comma-separated values, like: [1,2,3].
PROBLEM: [31, 33, 27, 25]

SOLUTION: [32.0, 30.0, 26.0]

PROBLEM: [59, -64, -32, 17, -11, 56, 91, -44, 86, -59, -3, -8, 62, -66, 1]

SOLUTION: [-2.5, -48.0, -7.5, 3.0, 22.5, 73.5, 23.5, 21.0, 13.5, -31.0, -5.5, 27.0, -2.0, -32.5]

PROBLEM: [-35, 4, -49]

SOLUTION:
[-15.5, -22.5]