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Q:

A boatman can row 3 km against the stream in 20 minutes and return in 18 minutes. Find the rate of current ?

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

Explanation:

Speed in upstream = Distance / Time = 3 x 60/20 = 9 km/hr.

Speed in downstream = 3 x 60/18 = 10 km/hr

Rate of current = (10-9)/2 = 1/2 km/hr.

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Filed Under: Boats and Streams
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Q:

If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is  ?

A) 1 B) 1/2
C) 0 D) 3/5
 
Answer & Explanation Answer: B) 1/2

Explanation:

The number of exhaustive outcomes is 36.
Let E be the event of getting an even number on one die and an odd number on the other. Let the event of getting either both even or both odd then = 18/36 = 1/2
P(E) = 1 - 1/2 = 1/2.

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Filed Under: Probability
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Q:

If a trader sold two cars each at Rs. 325475 and gains 12% on the first and loses 12% on the second, then his profit or loss percent on the whole is ?

A) 1.44% loss B) 14.4% loss
C) 0% D) 14.4% profit
 
Answer & Explanation Answer: A) 1.44% loss

Explanation:

SP of each car is Rs. 325475, he gains 12% on first car and losses 12% on second car.
In this case, there will be loss and percentage of loss is given by

= [(profit%)(loss%)]/100 = (12)(12)/100 % = 1.44%

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Filed Under: Profit and Loss
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Q:

64 boys and 40 girls form a group for social work. During their membership drive, the same number of boys and girls joined the group. How many members does the group have now, if the ratio of boys to girls is 4:3 ?

A) 168 B) 201
C) 147 D) 154
 
Answer & Explanation Answer: A) 168

Explanation:

Let us say x boys and x girls joined the group.

(64 + x)/(40 + x) = 4/3

192 + 3x = 160 + 4x => x = 32

Number of members in the group = 64 + x + 40 + x

= 104 + 2x = 168.

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Filed Under: Ratios and Proportions
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Q:

Who will be the chief guest of the opening ceremony of United Nation Vesak Day celebration to be held at Colombo, Sri Lanka between 12 May and 14 May ?

A) Bidhya Devi Bhandari B) Sheikh Hasina
C) Wijeyadasa Rajapakshe D) Narendra Modi
 
Answer & Explanation Answer: D) Narendra Modi

Explanation:

For the first time in Sri Lanka, the United Nation Vesak Day celebration will be held in Colombo and Kandy from May 12 to 14. Indian Prime Minister Narendra Modi will be the chief guest of the opening ceremony which will be held at BMICH in Colombo while Nepali President Bidhya Devi Bhandari will attend for the closing ceremony which is scheduled to be held at the Sri Dalada Maligawa premises in Kandy.

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Filed Under: General Awareness

Q:

Which Airport is named as Pandit Deen Dayal Upadhay Airport ?

A) Gorakhpur B) Delhi
C) Gujarath D) Agra
 
Answer & Explanation Answer: D) Agra

Explanation:

 The UP government changed the name of Gorakhpur and Agra Airports as well as the name of the department of welfare of the differently abled.

 The Gorakhpur Airforce Station has been renamed as Mahayogi Goraknath Airport after the founder of the Nath monastic movement.

The Agra Airport will be renamed after Pandit Deen Dayal Upadhyay airport. The Department of Disabled Welfare will now be known as 'Divyang Jan Vikas Empowerment'.

 

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Filed Under: General Awareness
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Q:

In an exam, a candidate secured 504 marks out of the maximum mark of 'M'. If the maximum mark 'M' is converted into 800 marks, he would have secured 384 marks. What is the value of 'M' ?

A) 910 B) 1000
C) 970 D) None of the above
 
Answer & Explanation Answer: D) None of the above

Explanation:

504/M = 384/800

(504 x 800) / 384 = M

M = 1050

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Filed Under: Ratios and Proportions
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Q:

Two passenger trains start at the same hour in the day from two different stations and move towards each other at the rate of 16 kmph and 21 kmph respectively. When they meet, it is found that one train has traveled 60 km more than the other one. The distance between the two stations is ?

A) 387 kms B) 242 kms
C) 145 kms D) 444 kms
 
Answer & Explanation Answer: D) 444 kms

Explanation:

1h ----- 5 kms
? ------ 60 kms

Time = 12 hrs

Relative Speed = 16 + 21 = 37 kmph

T = 12 hrs

D = S x T = 37 x 12 = 444 kms.

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Filed Under: Problems on Trains
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