Jack and jim went biking. jack biked for 5 1/3 hours with average speed 12 1/2 miles per hour. jim traveled exactly 1 1/5 as far as jack did. how long was jim’s trip?

The base of pyramid a is a rectangle with a length of 10 meters and a width of 20 meters. the base of pyramid b is a square with 10-meter sides. the heights of the pyramids are the same. the volume of pyramid a is the volume of pyramid b. if the height of pyramid b increases to twice that of pyramid a, the new volume of pyramid b is the volume of pyramid a.