Adam bought a box of fruit that weighed six and three eights if he brought asecond box that weighed 7and two fifth kilograms what is the combined weight of both boxes

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.