input: Write a python function to grade a test based on the total score, returning "Pass" if the total is 40 or above, and "Fail" otherwise.
  assert grade_test([5, 10, 15, 10]) == "Pass"
  assert grade_test([10, 10, 10, 9]) == "Fail"
  assert grade_test([20, 20, 0, 0]) == "Pass"
  assert grade_test([10, 10, 10]) == "Fail"
output: def grade_test(scores):
      total = sum(scores)
      if total >= 40:
          return "Pass"
      else:
          return "Fail"