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A friend is spotted by Lalloo at a distance of 200 m. When Lalloo starts to approach him, the friend also starts moving in the same direction as Lalloo. If the speed of his friend is 15 kmph, and that of Lalloo is 20 kmph, then how far will the friend have to walk before Lalloo meets him?
  • a)
    600 m
  • b)
    0.6 m
  • c)
    6 km
  • d)
    900 m
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A friend is spotted by Lalloo at a distance of 200 m. When Lalloo star...
Lalloo is unfortunate that the friend is moving away from him.
(Because the friend moves in same direction as Lalloo).
relative speed= 20- 15= 5,kmph. distance= 200 m.
Thus, Lalloo will meet his friend when he gains 200 m over him.
=> time required = distance / speed = 0.2/5 = 1/25 hrs.
=> Distance travelled by the friend in 1/25 hrs. (when Lalloo catches up him)
=> Time x Speed = 1/25 x 15 = 3/5 km = 600 m
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Community Answer
A friend is spotted by Lalloo at a distance of 200 m. When Lalloo star...
Given:
Distance between Lalloo and his friend = 200 m
Speed of friend = 15 kmph
Speed of Lalloo = 20 kmph

To find:
The distance friend will have to walk before Lalloo meets him

Approach:
We can use the formula for relative speed to solve this problem. Let's assume that Lalloo and his friend meet after time 't' and the distance covered by friend in this time is 'd'. Then,

Relative speed = Speed of Lalloo - Speed of friend = (20 - 15) kmph = 5 kmph

Time taken to cover distance 'd' by friend = d/15 hours
Time taken to cover distance '200 - d' by Lalloo = (200 - d)/20 hours

As both Lalloo and his friend start moving at the same time and meet at the same time, we can equate their time taken and solve for 'd'.

Calculation:
d/15 = (200 - d)/20
4d = 3000 - 15d
19d = 3000
d = 157.89 m

Therefore, the friend will have to walk a distance of 157.89 m before Lalloo meets him.

Answer:
Option A) 600 m
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A friend is spotted by Lalloo at a distance of 200 m. When Lalloo starts to approach him, the friend also starts moving in the same direction as Lalloo. If the speed of his friend is 15 kmph, and that of Lalloo is 20 kmph, then how far will the friend have to walk before Lalloo meets him?a)600 mb)0.6 mc)6 kmd)900 mCorrect answer is option 'A'. Can you explain this answer?
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A friend is spotted by Lalloo at a distance of 200 m. When Lalloo starts to approach him, the friend also starts moving in the same direction as Lalloo. If the speed of his friend is 15 kmph, and that of Lalloo is 20 kmph, then how far will the friend have to walk before Lalloo meets him?a)600 mb)0.6 mc)6 kmd)900 mCorrect answer is option 'A'. Can you explain this answer? for Quant 2025 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about A friend is spotted by Lalloo at a distance of 200 m. When Lalloo starts to approach him, the friend also starts moving in the same direction as Lalloo. If the speed of his friend is 15 kmph, and that of Lalloo is 20 kmph, then how far will the friend have to walk before Lalloo meets him?a)600 mb)0.6 mc)6 kmd)900 mCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Quant 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A friend is spotted by Lalloo at a distance of 200 m. When Lalloo starts to approach him, the friend also starts moving in the same direction as Lalloo. If the speed of his friend is 15 kmph, and that of Lalloo is 20 kmph, then how far will the friend have to walk before Lalloo meets him?a)600 mb)0.6 mc)6 kmd)900 mCorrect answer is option 'A'. Can you explain this answer?.
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