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Q:

A train takes 10 sec to cross a bridge of length 100 m travelling at 90 kmph. Find the length of the train in meters.

A) 130 B) 120
C) 140 D) 150
 
Answer & Explanation Answer: D) 150

Explanation:
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Filed Under: Problems on Trains
Exam Prep: Bank Exams

Q:

Consider the given question and decide which of the following statements is/are sufficient to answer the question.


How was the sale of the company ABC?

Statements :

1. The company ABC sold 75000 units of soaps each at Rs. 70/-.
2. ABC has no other products in the production line.

A) Both 1 and 2 are sufficient to answer the question. B) 2 alone is sufficient while 1 alone is not sufficient to answer the question.
C) 1 alone is sufficient while 2 alone is not sufficient to answer the question. D) Neither 1 nor 2 is sufficient to answer the question.
 
Answer & Explanation Answer: A) Both 1 and 2 are sufficient to answer the question.

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Filed Under: Statement and Assumptions
Exam Prep: AIEEE , Bank Exams , CAT

Q:

Breadth of a rectangle is equal to the diagonal of the square whose side is 2.5√2 cm. Ratio between length and breadth of rectangle is 3 : 1. Find the area of the rectangle (in cm2).

A) 75 B) 90
C) 85 D) 80
 
Answer & Explanation Answer: A) 75

Explanation:

Diagonal of Square = Side √2= 2.5√2 × √2= 5 cm
Breadth = 5 cm
Length of rectangle = 5 × 3 = 15 cm
Area of rectangle = 15 × 5 = 75 cm2

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

Q:

Equal distance is covered by a boat in upstream and in downstream in total 5 hours. Sum of speed of a boat in upstream and downstream is 40 km/hr. Speed of boat in still water is 600%
more than the speed of stream. Find theapproximate distance covered by boat in downstream (in km).

A) 45 B) 50
C) 55 D) 60
 
Answer & Explanation Answer: B) 50

Explanation:

let speed of boat= X, speed of stream= Y
Upstream speed= X-Y
Downstream speed= X+Y
Sum of upstream & downstream= (X-Y) +(X+Y)= 2X
So, 2X= 40
X= 20 km/hr
Speed of boat : speed of stream= 600+100 :100= 7:1
So speed of Stream= 20/7 km/hr
ATQ, D/( X-Y) + D/( X+Y) = 5
D/(120/7) + D/(160/7)= 5
D= 480×5/49= 48.97 km= 50 Km(approx)

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Filed Under: Boats and Streams
Exam Prep: Bank Exams , GATE

Q:

A starts a business, after 6 months B also join him with Rs.4500 and after 2 months of B’s joining C also join them with Rs.4500. If A gets approx. Rs 4900 out of total annual profit of Rs. 10,000 then find the approximate value of initial investment of A.

A) Rs.4800 B) Rs.4200
C) Rs.3600 D) Rs.4400
 
Answer & Explanation Answer: C) Rs.3600

Explanation:

Let initial investment of A = x
Ratio of profit A : B : C = 12 × x : 6×4500 :4×4500
A :B:C = x : 2250: 1500
Now ATQx/(x+2250+1500) = 4900/10000
solving this we get,x ≈ Rs 3600

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

Q:

The number of neutrons in an atom is equal to the :

A) Mass number B) Atomic number
C) Mass number - atomic number D) Number of electrons
 
Answer & Explanation Answer: C) Mass number - atomic number

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Filed Under: General Science
Exam Prep: CAT , Bank Exams , AIEEE

Q:

Which of the follow is the last element in Newlands Law of Octaves classification?

A) Rhodium B) Radium
C) Iron D) Thorium
 
Answer & Explanation Answer: D) Thorium

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Filed Under: Chemistry
Exam Prep: CAT , Bank Exams , AIEEE

Q:

The volume of a right circular cone, whose radius of the base is same as one-third of its altitude, and the volume of a sphere are equal. The ratio of the radius of the cone to the radius of the sphere is :

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

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams