A.t is less than or equal to 6
What is the underlined word ??
12 x 2 = 24 ;
24 x 3 = 72 ;
72 x 4 = 288;
288 x 5 = 1440 ;
_ _ _ _ _ _ _ _ _
Answer:
3.5 Hours
Step-by-step explanation:
Cartoon 1/2 hour or 30 minutes
Movie = 6 x 30 minutes = 180 minutes or
3 hours
1/2 x 6 = 3
Cartoon + Movie = 3 and a half hours
30 minutes + 180 minutes = 210 minutes or
3.5 hours
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 :
![t_1 = \dfrac{1}{3}\ hours](https://tex.z-dn.net/?f=t_1%20%3D%20%5Cdfrac%7B1%7D%7B3%7D%5C%20hours)
Time taken to walk two mile on flat land( one on going and one or returning ) is :
![t_2 = \dfrac{2}{4}\ hours\\\\ t_2 = \dfrac{1}{2}\ hours](https://tex.z-dn.net/?f=t_2%20%3D%20%5Cdfrac%7B2%7D%7B4%7D%5C%20hours%5C%5C%5C%5C%20t_2%20%3D%20%5Cdfrac%7B1%7D%7B2%7D%5C%20hours)
Time taken to walk one mile downhill is :
![t_3 = \dfrac{1}{5}\ hours](https://tex.z-dn.net/?f=t_3%20%3D%20%5Cdfrac%7B1%7D%7B5%7D%5C%20hours)
Total time taken :
![T = t_1 + t_2 + t_3 \\\\T = \dfrac{1}{3} + \dfrac{1}{2}+\dfrac{1}{5}\\\\T = \dfrac{10 + 15 + 6}{30} \\\\T = \dfrac{31}{30}\ hours = \dfrac{31}{30}\times 60 \ minutes\\\\T = 62\ minutes](https://tex.z-dn.net/?f=T%20%3D%20t_1%20%2B%20t_2%20%2B%20t_3%20%5C%5C%5C%5CT%20%3D%20%5Cdfrac%7B1%7D%7B3%7D%20%2B%20%5Cdfrac%7B1%7D%7B2%7D%2B%5Cdfrac%7B1%7D%7B5%7D%5C%5C%5C%5CT%20%3D%20%5Cdfrac%7B10%20%2B%2015%20%2B%206%7D%7B30%7D%20%5C%5C%5C%5CT%20%3D%20%5Cdfrac%7B31%7D%7B30%7D%5C%20hours%20%20%3D%20%5Cdfrac%7B31%7D%7B30%7D%5Ctimes%2060%20%20%5C%20minutes%5C%5C%5C%5CT%20%3D%2062%5C%20minutes)
Therefore, time taken un 62 minutes.