Find out the speed:
Shyam is travelling on his cycle and has calculated to reach point ‘A’ at 2 PM If he travels at 10 kmph. he will reach there at 12 noon if he travels at 15 kmph. At what speed must he travel to reach “A” at 1 PM:
- 12 kmph
- 14 kmph
- 8 kmph
- 11 kmph
Answer: (1) 12 kmph
Explanation:-
Let the distance travelled by Shyam be X km.
According to question,
X/10 – X/15 = 2
(3 X – 2 X)/30 = 2
X = 2 x 30
X = 60 km
Time taken by Shyam to travel 60 km at 10 kmph = 60/10
= 6 hours
Then, Shyam started 6 hours before 2 P.M.
Therefore, required speed = 60/5
= 12 kmph.
Hence, the correct answer is option (1) 12 kmph.