26
Q:

A and B runs around a circular track. A beats B by one round or 10 minutes. In this race, they had completed 4 rounds. If the race was only of one round, find the A's time over the course:

A) 8 min B) 7.5 min
C) 12.5 min D) 12 min

Answer:   B) 7.5 min



Explanation:

B runs around the track in 10 min.

 i.e ,    Speed of B = 10 min per round

 Therefore,  A beats B by 1 round

  Time taken  by A to complete 4 rounds 

  = Time taken by B to complete 3 rounds  

 = 30 min 

 

Therefore, A's speed = 30/4 min per round = 7.5 min per round

 Hence, if the race is only of one round A's time over the course = 7 min 30 sec

Q:

A car covers a certain distance in 25 hrs. It it reduces the speed by 1/5th, the car covers 200 km less in that time. The speed of car is

A) 60 kmph B) 30 kmph
C) 40 kmph D) 50 kmph
 
Answer & Explanation Answer: C) 40 kmph

Explanation:
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0 151
Q:

Places A and B are 144 km apart. Two cars start simultaneously, one from A and the other from B. If they move in the same direction, they meet after 12 hours, but if they move towards each other they meet after 9/8 hours. The speed (in km/h)of the car moving at a faster speed, is:

 

A) 70 B) 72
C) 60 D) 64
 
Answer & Explanation Answer: A) 70

Explanation:
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2 270
Q:

A flight covering a distance of 1200 kin could reduce the travel time by 30 minutes, due to an additive tailwind that increases the average speed by 120 km/hr. What was the duration of the flight in hours?

 

A) 2.2 hours B) 1.9 hours
C) 1.8 hours D) 2 hours
 
Answer & Explanation Answer: D) 2 hours

Explanation:
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0 292
Q:

Two cars A and B leave Delhi at 8:30 a.m. and at 9 a.m. for Shimla, respectively. They travel at speeds of 40km/h and 50 km/respectively. How many kilometers away from Delhi will the two cars be together?

 

A) 45 km   B) 100 km  
C) 200 km   D) 5 km  
 
Answer & Explanation Answer: B) 100 km  

Explanation:
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1 300
Q:

A private taxi company charges a fixed charge along with a per kilometer charge based on the distance covered. For a journey of 24km, the charges paid are ₹368 and for a journey of 32 km, the charges paid are ₹464. How much will a person have to pay for traveling a distance of 15 km?

 

A) ₹ 280 B) ₹ 180
C) ₹ 260 D) ₹ 290
 
Answer & Explanation Answer: C) ₹ 260

Explanation:
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2 247
Q:

If Raj drives faster by 10 km/h, he reaches his village 90 minutes early. If he drives slower by 10 km/h, he reaches the village 150 minutes late. Find the distance he travels.

 

A) 500 km B) 400 km
C) 600 km D) 300 km
 
Answer & Explanation Answer: D) 300 km

Explanation:
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4 424
Q:

The distance between two places A and B is 245 km. TWo cars, one from A and the other from B, start at the same time, travelling towards each other. If one car travels at a speed of 40 km/h and the other at 30 km/h , after how many hours will they meet?

 

A) 234 hours B) 3 hours
C) 312  hours D) 2 hours
 
Answer & Explanation Answer: C) 312  hours

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4 310
Q:

Mehek goes for a stroll from her home. She starts walking facing the Sun at 6:00 am in the morning and walks 1 km straight. At a crossroads, she takes a right turn and then walks 1 km. Finally, she takes a U- turn and walks again for 1 km. How far is she from her home?

 

A) 3 km B) 1 km
C) 2 km D) 4 km
 
Answer & Explanation Answer: B) 1 km

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3 235