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A certain distance is covered at a certain speed. If half of this distance is covered in double the time, the ratio of the two speeds is

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Important Questions on Time, Speed and Distance

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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 43
Two runners start running together for a certain distance, one at 8 km/h and another at 5 km/h. The former arrives one and half an hour, before the latter. The distance (in km) is:
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 44

The ratio between the rates of walking at A and B is 2 : 3. If the time taken by B to cover a certain distance is 48 minutes, the time taken (in min.) by A to cover the distance is :

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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 48
Two persons, Alif and Laila start at the same time from Allahabad and Lucknow and proceed towards each other at 45 km/h and 54 km/h respectively. When they meet, it is found that one of them has travelled 72 km more than the other. The distance between the places (in km ) is: 
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 49
Walking at 4/5 of his normal speed, Dewang is 15 minutes late in reaching his club. What is the usual time taken by him to cover the distance?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 50
Walking at 3/4 of her normal speed Malleshwari takes 2 hours more than the normal time. What is the normal time?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 51
Walking at 3/2 of his normal speed Shekhawat takes 40 minutes less than the usual time? What is the changed (new) time taken by Shekhawat?
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 53
A student walks from his house at 5 km/hr and reaches his school 10 minutes late. If his speed had been 6 km/hr, he would have reached 15 minutes early. The distance of his school from his house is
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Quantum CAT Also Useful for XAT>Chapter 9 - SNAP>CMAT>Q 54
Sachin and Mongiya starting from the same place walk at the rate of 7.5 km/h and 9 km/h respectively. What time will they take to be 7.5 km apart, if they walk in the same direction?