Question

Jenny left her house at 8 a.m. and went to school at a speed of 2 2 3 mph. Her brother Jim left house 4 minutes later and went to the same school. What must his speed be if he wants to keep the same distance between his sister and himself?

Answer 1

Jim will maintain the distance if he goes to school at the same speed as Jenny's.

Jim's speed must be 2 2/3 mph.