Aditya tracked whether he wore a tie and whether he received a compliment on his outfit for 30 days. The Venn diagram below shows the data that he collected.

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.