Question

The mean of Greg’s journey times to work on 3 days was 28 minutes.

Answer 1

The mean is found by adding the time it takes Greg each day and then diving by the number of days: 27+25+32=84.
84/3=28 min
it takes Greg 32 min on the third day

Answer 2

28x3=84

84-27-25=32

That is my solution.