Working alone, it would take shandra 45 minutes to mow the lawn. to mow the same lawn, also working alone, it would take kelly 1 hour and 15 minutes. if they work together, the girls believe it will take them 1 hour to mow the lawn. which best describes the reasonableness of their solution? their estimate is longer than the time it will actually take: mc027-1.jpg their estimate is accurate: mc027-2.jpg their estimate is shorter than the amount of time it will actually take: mc027-3.jpg their estimate is longer than the time it will actually take: mc027-4.jpg