Heather's class took a field trip to the science museum. They left school at 7:30 A.M. It took
them 30 minutes to drive to the museum. They stayed at the museum for 2 hours and it took
them 30 minutes to drive back to the school. What time was it when Heather's class got back
to school?
10:30 A.M.
7:30 A.M.
10:00 A.M.
11:00 A.M.