Level 3
Loisa left the house at 11.30 a.m. and drove towards her office. 1 hour later, her brother left house and drove towards the same office at 76 km/h. When the brother reached the office at 3.30 p.m., Loisa had another 3 km to travel. What was Loisa's average speed? Express the answer in mixed number.
Level 3
Queenie went for a party with her friends. She left home at 21 20 and returned home at 01 05 the next day. What was the total time that Queenie was out at the party?