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The driver of an ambulance sees a college bus 40 m ahead of him after 20 seconds, the college bus is 60 meter behind. If the speed of the ambulance is 30 km/h, what is the speed of the college bus?
- a)10 kmph
- b)12 kmph
- c)15 kmph
- d)22 kmph
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The driver of an ambulance sees a college bus 40 m ahead of him after ...
Relative Speed = (Total distance)/total time
= (60+40) /20 = 5 m/s = (5*18)/5 = 18 kmph
Relative Speed = (speed of ambulance – speed of College bus)
Speed of College bus = speed of ambulance – relative speed.
= 30-18 = 12 kmph.
= (60+40) /20 = 5 m/s = (5*18)/5 = 18 kmph
Relative Speed = (speed of ambulance – speed of College bus)
Speed of College bus = speed of ambulance – relative speed.
= 30-18 = 12 kmph.
Most Upvoted Answer
The driver of an ambulance sees a college bus 40 m ahead of him after ...
Given information:
- The driver of an ambulance sees a college bus 40 m ahead of him after 20 seconds.
- The college bus is 60 meters behind.
To find:
The speed of the college bus.
Approach:
1. First, we need to convert the speed of the ambulance from km/h to m/s.
2. Using the time and distance information, we can calculate the relative speed between the ambulance and the college bus.
3. Finally, we can find the speed of the college bus.
Calculation:
1. Converting the speed of the ambulance:
Speed of the ambulance = 30 km/h
To convert km/h to m/s, we use the formula:
Speed (m/s) = Speed (km/h) × (1000 m/1 km) × (1 h/3600 s)
So, Speed of the ambulance = 30 × (1000/1) × (1/3600) = 8.33 m/s (approximately)
2. Calculating the relative speed:
Distance covered by the ambulance in 20 seconds = 40 m
Relative speed = (Distance covered by ambulance + Distance covered by college bus) / Time
Relative speed = (40 + 60) / 20 = 100/20 = 5 m/s
3. Finding the speed of the college bus:
Relative speed = Speed of ambulance - Speed of college bus
5 = 8.33 - Speed of college bus
Speed of college bus = 8.33 - 5 = 3.33 m/s
4. Converting the speed of the college bus to km/h:
Speed of college bus = 3.33 m/s
To convert m/s to km/h, we use the formula:
Speed (km/h) = Speed (m/s) × (3600 s/1 h) × (1 km/1000 m)
So, Speed of college bus = 3.33 × (3600/1) × (1/1000) = 12 km/h (approximately)
Therefore, the speed of the college bus is 12 km/h.
- The driver of an ambulance sees a college bus 40 m ahead of him after 20 seconds.
- The college bus is 60 meters behind.
To find:
The speed of the college bus.
Approach:
1. First, we need to convert the speed of the ambulance from km/h to m/s.
2. Using the time and distance information, we can calculate the relative speed between the ambulance and the college bus.
3. Finally, we can find the speed of the college bus.
Calculation:
1. Converting the speed of the ambulance:
Speed of the ambulance = 30 km/h
To convert km/h to m/s, we use the formula:
Speed (m/s) = Speed (km/h) × (1000 m/1 km) × (1 h/3600 s)
So, Speed of the ambulance = 30 × (1000/1) × (1/3600) = 8.33 m/s (approximately)
2. Calculating the relative speed:
Distance covered by the ambulance in 20 seconds = 40 m
Relative speed = (Distance covered by ambulance + Distance covered by college bus) / Time
Relative speed = (40 + 60) / 20 = 100/20 = 5 m/s
3. Finding the speed of the college bus:
Relative speed = Speed of ambulance - Speed of college bus
5 = 8.33 - Speed of college bus
Speed of college bus = 8.33 - 5 = 3.33 m/s
4. Converting the speed of the college bus to km/h:
Speed of college bus = 3.33 m/s
To convert m/s to km/h, we use the formula:
Speed (km/h) = Speed (m/s) × (3600 s/1 h) × (1 km/1000 m)
So, Speed of college bus = 3.33 × (3600/1) × (1/1000) = 12 km/h (approximately)
Therefore, the speed of the college bus is 12 km/h.
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Community Answer
The driver of an ambulance sees a college bus 40 m ahead of him after ...
Relative Speed = (Total distance)/total time
= (60+40) /20 = 5 m/s = (5*18)/5 = 18 kmph
Relative Speed = (speed of ambulance – speed of College bus)
Speed of College bus = speed of ambulance – relative speed.
= 30-18 = 12 kmph.
= (60+40) /20 = 5 m/s = (5*18)/5 = 18 kmph
Relative Speed = (speed of ambulance – speed of College bus)
Speed of College bus = speed of ambulance – relative speed.
= 30-18 = 12 kmph.
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The driver of an ambulance sees a college bus 40 m ahead of him after 20 seconds, the college bus is 60 meter behind. If the speed of the ambulance is 30 km/h, what is the speed of the college bus?a)10 kmphb)12 kmphc)15 kmphd)22 kmphCorrect answer is option 'B'. Can you explain this answer? for Quant 2026 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about The driver of an ambulance sees a college bus 40 m ahead of him after 20 seconds, the college bus is 60 meter behind. If the speed of the ambulance is 30 km/h, what is the speed of the college bus?a)10 kmphb)12 kmphc)15 kmphd)22 kmphCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The driver of an ambulance sees a college bus 40 m ahead of him after 20 seconds, the college bus is 60 meter behind. If the speed of the ambulance is 30 km/h, what is the speed of the college bus?a)10 kmphb)12 kmphc)15 kmphd)22 kmphCorrect answer is option 'B'. Can you explain this answer?.
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