Given :
Xinran walks 3 mi/h uphill, 4 mi/h on flat land and 5 mi/h downhill.
To Find :
If he walks one mile uphill, then one mile on flat land and then returns by the same route to his starting point, how many minutes does he walk.
Solution :
Time taken to walk one mile uphill is :
Time taken to walk two mile on flat land( one on going and one or returning ) is :
Time taken to walk one mile downhill is :
Total time taken :
Therefore, time taken un 62 minutes.
1.1, 0.10299, 0.1038, 0.9 im pretty sure
Answer:
9 14 19 24 29 34 39 44 49 54 59 64 69 74 79 84 89 94 99