Hard
Pratigya started walking in the south direction and after walking 15 steps turned to her left twice and walked 15 steps both times. How far is she from her starting point?
Explanation
Explanation
Walking south 15 steps, then turning left (now facing east) and walking 15 steps, then turning left again (now facing north) and walking 15 steps: the southward and northward legs of 15 steps each cancel out, leaving only the 15 steps walked eastward as the net straight-line distance from the start.
PRO TIP
Re-check your working by substituting the answer back into the original question.