Question

Three friends go on a walk, Their steps measure 50 cm, 25 cm, and 20 cm respectively. What is the minimum distance each should walk so that all can cover the same distance in complete steps?

• A. 50 cm
• B. 100 cm
• C. 160 cm
• D. 200 cm

Answer 1

The correct option is B 100 cm

To find the minimum distance they shoudl cover, inorder to complete same distance ,
we need to find the least common multiple of 50, 25, 40
multiples of 50 = 50, 100, 150..
Multiples of 25 = 25, 50, 75, 100, 125..
Multiples of 20 = 20, 40, 60, 80, 100, 120...
The least common multiple here is 100
so the minimum equal distance they can all cover = 100cm