Low Cheng Yi's answer to Eris Tan KQ's Primary 6 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Low Cheng Yi
Low Cheng Yi's answer
41 answers (Tutor Details)
1st
You can actually assume the distance to be any number, i used 1km for convenience :)