RIMC Entrance Exam - Free Maths Revision test- solved papers by www.sainikrimc.com
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RIMC Entrance Exam - Free Maths Revision test- solved papers by www.sainikrimc.com
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RIMC Entrance Exam - Free Maths Revision test- solved papers by www.sainikrimc.com
If a bus travels 160 km in 4 hours and a train travels 320 km in 5 hours at uniform speeds, then what is the ratio of the distances travelled by them in one hour?
- 4 : 5
- 1 : 2
- 8 : 5
- 5 : 8
Answer
Bus travels 160 km in 4 hours
Speed of bus = 160/4 = 40 km/hr
Train travels 320 km in 5 hours
Speed of train = 320/5 = 64 km/hr
In one hour, bus travels 40 km and train travels 64 km.
Ratio = 40:64 = 5:8
The correct option is D.
A person can walk a certain distance and drive back in six hours. He can also walk both ways in 10 hours. How much time will he take to drive both ways?
- Two hours
- Two and a half hours
- Four hours
- Five and a half hours
Answer
When a person walks two ways, it takes 10 hours.
So, 1-way walk will take 5 hours
1-way walk + 1-way Drive = 6 hours
1-way drive = 6 - 5 = 1 hour
Hence, 2-way drive = 2 hours
The correct option is A.
A thief running at 8 km/hr is chased by a policeman whose speed is 10 km/hr. if the thief is 100 m ahead of the policeman, then the time required for the policeman to catch the thief will be
- 6 min
- 3 min
- 2 min
- 4 min
Answer
The relative speed between police and thief = 10-8 = 2 km/h = 10/18 m/s
Distance between police and thief = 100 m
Time = Distance/Speed = 180 s = 3 min
The correct option is B.
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