Question
Dori and Malory are tracking their steps taken as a health goal. Dori leaves her house at 12:00 p.m. and walks at 50 steps per minute. Malory leaves her house at 12:20 p.m. and walks at 90 steps per minute.
At what time will Malory's steps catch up to Dori's steps?
At what time will Malory's steps catch up to Dori's steps?
Answers
Henry
50steps/min * 20min = 1000 Step head-start for Dori.
90 * T = 50 * T + 1000.
90T = 50T + 1000
T = 25 min. to catch up.
90 * T = 50 * T + 1000.
90T = 50T + 1000
T = 25 min. to catch up.
jorry
no