marla starts running around a circular track at the same time nick starts walking around the same circular track . marla completes 30 laps around the track per hour and nick completes 15 laps around the track per hour . how many minutes after marla and nick begin moving will marla have completed 4 more laps around the track than nick ?
"maria ' s rate - 30 laps per hour - - > 30 / 60 laps / min nick ' s rate - 15 laps per hour - - > 15 / 60 laps / min lets set equations : 30 / 60 * t = 4 ( since maria had to run 4 laps before nick would start ) 15 / 60 * t = 0 ( hick has just started and has n ' t run any lap yet ) ( 30 / 60 - 15 / 60 ) * t = 4 - 0 ( since nick was chasing maria ) t = 16 min needed maria to run 4 laps answer : b"
divide(4, subtract(divide(30, multiply(add(15, const_1), 30)), divide(15, multiply(add(15, const_1), 30))))