Mrs. Castro left her parents' house in the province and drove home. After driving for 3 hours, she was 90 km from home, and after
5 hours, she was 25 km from home. Assuming that the distance from
home and the number of hours driving form a linear relationship,
how long did it take Mrs, Castro to drive from her parents' house
to her home? How far was Mrs, Castro from home after driving
6 hours? How long had Mrs. Castro been driving when she was
50 km from home?