Problem Solving (PS) | Re: Jack and Jill both left their respective homes at 1 PM. Jack walked

Jack and Jill both left their respective homes at 1 PM. Jack walked till a school that was between 2.5 kilometers and 3 kilometers from his home, inclusive, and returned home between 1:55 PM and 2:05 PM. If Jill walked 5 kilometers more than Jack and returned to her home at 3 PM, which of the following statements must betrue?

I.The walking speed of Jill was greater than that of Jack
II.Jack’s walking speed was close to 3 kilometers per hour
III.Had Jack covered 0.5 more kilometers every 30 minutes, his walking speed would have been greater than Jill’s