10 (a) Bilal goes for a cycle ride. He starts at 3 pm. He finishes at 5.38 pm. He has a total of 25 minutes rest during the ride. Work out how long, in hours and minutes, he spends cycling. (b) Sonia walks to her aunt’s house. She leaves home at 10 25. She walks a total of 12 km at an average speed of 5 km/h. Work out the time Sonia arrives at her aunt’s house.