Mathematics Express>Chapter 13 - Time,Speed and Distance>Exercise 1>Q 4

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In a flight of $2400 k m$ , an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by $400 k m / h r$ And the time of flight increased by $1$ Hours. The duration of the flight is:

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Important Questions on Time,Speed and Distance

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Mathematics Express>Chapter 13 - Time,Speed and Distance>Exercise 1>Q 5

Two vehicles

A

and

B

travel with uniform speed

30 k m

per hour and

60 k m

per hour respectively in the same direction. They start at the same time and from the same place for a distance of

120 k m

. The faster vehicle

B

reaches the destination and travels back with the same speed. Assume that the loss of time to change the direction is negligible. If the distance travelled by the slower vehicle

A

before the two vehicles cross each other, then is

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Mathematics Express>Chapter 13 - Time,Speed and Distance>Exercise 1>Q 1

A car covers a certain distance in

8 h

. If the speed is increased by

4 km / h

. The distance could be covered in

7 \frac{1}{2} h

. The distance is:

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Mathematics Express>Chapter 13 - Time,Speed and Distance>Exercise 1>Q 2

A circular field has a circumference of $360 k m$ . Three cyclists start together and can cycle $48, 60$ and $72 k m$ a day, round the field. After how many days will they meet again?

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Mathematics Express>Chapter 13 - Time,Speed and Distance>Exercise 1>Q 3

Anil covers a distance of

27

km

in

4

Hours. If his speed during the first

15

km

is

6

kmph

, what is his average speed during the remaining part of his journey?

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Mathematics Express>Chapter 13 - Time,Speed and Distance>Exercise 1>Q 1

Ravi travels 300 km partly by train and partly by car. He takes 4 hours to reach, if he travels 60 km by train and rest by car. He will take 10 minutes more if he were to travel 100 km by train and rest by car. The sped of the train and car is :