Set up an equation that can be used to solve the problem. solve the equation and answer the question asked. two friends decide to meet in chicago to attend a cubs baseball game. rob travels 224 miles in the same time that carl travels 196 miles. rob's trip uses more interstate highways and he can average 7 mph more than carl. what is rob's average speed? a) 49 mphb) 52 mphc) 56 mphd) 60 mph this is all the information in the question.