Level 3 4 m
There were some staircases with the same amount of steps. For the 1st staircase, Carl walked up some steps and ran up 7 steps. He took 98 seconds. For the next staircase, he ran up 15 steps and walked the rest of the steps, and took a total of 58 seconds. How long would Carl take to walk up 4 staircases of the same number of steps? Express the answer in minutes and seconds.