Three persons start a morning walk together. Their steps measure 70 cm, 75 cm and 80 cm, respectively. What is the minimum distance each should walk, so that all of them can cover the same distance in complete steps?

Explanation

Given: Three persons start a morning walk together and their step measure 70cm, 75cm, and 80cm respectively. Calculation: Their steps measure 70cm, 75cm, and 80cm respectively Minimum distance covered by each = LCM(70, 75, 80) For LCM ⇒ 70 = 2 × 5 × 7 ⇒ 75 = 3 × 5 2 ⇒ 80 = 2 4 × 5 Now, LCM = 2 4 × 5 2 × 3 × 7 = 8400 So, the minimum distance covered by each is 8400cm.