When cheryl goes mountain climbing she rests five minutes for every 15 minutes that she climbs. if cheryl combined time is 2 hours how many minutes does she rest

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.