Question

(b) a man, walking on a level, 3011,
E. Answer the following questions.
the figure. He takes 4 minutes to travel across each side
80 m
B
А A
40 m
40 m
D
c
80 m
Is the motion of this farmer uniform or non-uniform? Find his average speed
over one complete round of the field.
1. A farmer moves along the boundary of a rectangular field ABCD as shown in​

Answer 1

Answer:

385 m

Explanation: mark the brainliest please

Answer 2

Answer:

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Question 4 : A man leaves his home and walks at a speed of 12 km per hour, reaching the railway station 10 minutes after the train had departed. If instead he had walked at a speed of 15 km per hour, he would have reached the station 10 minutes before the train's departure. The distance (in km) from his home to the railway station is: [TITA]

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Explanatory Answer

Method of solving this CAT Question from Speed Time Distance

Given that a man leaves his home and walks at a speed of 12 km per hour, reaching the railway station 10 minutes after the train had departed.

If instead he had walked at a speed of 15 km per hour, he would have reached the station 10 minutes before the train's departure.

⟹ d12 is one time taken and d15 is another time taken.

The difference between these two times is 20 minutes

We have to find the distance (in km) from his home to the railway station.

20 mins is 13rd of an hour.

⟹ d12 = d15 + 13

⟹ d12 - d15 = 13

⟹ 5d−4d60 = 13

⟹ d60 = 13

⟹ d = 20 km

The distance (in km) from his home to the railway station is 20 km.

Important point to remember is that we don’t need to take the actual time here, we can take that difference of 10 minutes before and 10 minutes after which is equal to 20 minutes i.e. 13rd of an hour.

The question is "A man leaves his home and walks at a speed of 12 km per hour, reaching the railway station 10 minutes after the train had departed. If instead he had walked at a speed of 15 km per hour, he would have reached the station 10 minutes before the train's departure. The distance (in km) from his home to the railway station is: [TITA]"

Hence, the answer is 20 km