Direction: The line graph shows the distance covered by different trains in km and the data in the table shows the time taken by different trains to cover the distance (in hours). Time taken by different trains in hours
Train | Time |
\[{{T}_{1}}\] | 30 hours |
\[{{T}_{2}}\] | 9 hours 40 minutes |
\[{{T}_{3}}\] | 17 hours 30 minutes |
\[{{T}_{4}}\] | - |
\[{{T}_{5}}\] | 21 hours 36 minutes |
\[{{T}_{6}}\] | - |
\[{{T}_{7}}\] | - |
A) \[10\frac{10}{21}kmph\]
B) \[13\frac{5}{21}kmph\]
C) \[6\frac{2}{7}kmph\]
D) \[14\,\,kmph\]
E) \[\frac{5}{21}\]
Correct Answer: A
Solution :
Time taken by train \[{{T}_{1}}\] = 30 hours Time taken by train \[{{T}_{7}}=\frac{7}{10}\times 30\] = 21 hours Difference of speed \[={{T}_{7}}-{{T}_{1}}\] \[=\frac{1200}{21}-\frac{1400}{30}=\frac{400}{7}-\frac{140}{3}\] \[=\frac{220}{21}=10\frac{10}{21}\]kmphYou need to login to perform this action.
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