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Question

Robert is travelling on his cycle and has calculated to reach point A at 2 P.M. 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 P.M.?


Options:
A .  8 kmph
B .  11 kmph
C .  12 kmph
D .  14 kmph
Answer: Option C

Let the distance travelled by x km.

Then, x - x = 2 10 15

Robert Is Travelling On His Cycle And Has Calculated To Reac... 3x - 2x = 60

Robert Is Travelling On His Cycle And Has Calculated To Reac... x = 60 km.

Time taken to travel 60 km at 10 km/hr = Robert Is Travelling On His Cycle And Has Calculated To Reac... 60 Robert Is Travelling On His Cycle And Has Calculated To Reac...hrs = 6 hrs. 10

So, Robert started 6 hours before 2 P.M. i.e., at 8 A.M.

Robert Is Travelling On His Cycle And Has Calculated To Reac... Required speed = Robert Is Travelling On His Cycle And Has Calculated To Reac... 60 Robert Is Travelling On His Cycle And Has Calculated To Reac...kmph. = 12 kmph. 5



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