Question 3 of course exam has an incorrect answer

An incorrect option for Question 3 is currently scored as correct. While this option is also cited in the Explanation, the formula there is presented incorrectly. There are no parentheses around the numerator elements (meaning one should be expected to handle the division of the second element by the denominator and then adding this result to the first element as a whole number). However, even calculating the problem using this incorrect version of the formula would not yield the answer given.