My last brain cell isn't cooperating. a) on a trip to a lake, kerrie and shelly rode their bicycles four more than three times as many miles in the afternoon as in the morning. if the entire trip was 112 miles long, how far did they ride in the morning and how far in the afternoon. b) mr. and mrs. patton and their daughter, carolyn, own three cars. carolyn drives 10 miles per week farther in her car than her father does in his. mr, patton drived twice as many miles per week as mrs. patton. if their total mileage per week is 160 miles, how many miles per week does each of them drive? c) 10,483 people attended a rock festival. if there were 811 more boys than girls, and 2,481 fewer adults over 50 years of age than there were girls, how many of each group attended the festival?