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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Rohit crosses a 700 metres wide road in 35 seconds. What is his speed (in km/hr)?

 

A) 54 B) 76
C) 72 D) 84
 
Answer & Explanation Answer: C) 72

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

1 35566
Q:

When 0.36 is written in simplest form, the sum of the numerator and the denominator is :

A) 15 B) 34
C) 64 D) 13
 
Answer & Explanation Answer: B) 34

Explanation:

0.36 = 36/100 = 9/25.

Sum of the numerator and denominator is 9 + 25 = 34

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Filed Under: Decimal Fractions

76 35471
Q:

Due to reduction of 25% in price of oranges a customer can purchase 4 oranges more for Rs. 16. what is original price of an orange?

A) Rs 1 B) Rs 1.33
C) Rs 1.5 D) Rs 1.6
 
Answer & Explanation Answer: B) Rs 1.33

Explanation:

Recall it is based on inverse proportion or product constancy concept.

 

 

 

     Reducion in price                      increase in amount

 

 

 

         25%     1/4                              1/3   33.33% = 4 oranges

 

 

 

It means original number of oranges = 4 x 3 = 12

 

 

 

original price of oranges = 16/12 = Rs. 1.33

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

186 35387
Q:

Find the odd one out :

Chicken pox, Rubella, Flu, Meningitis

 

A) Rubella B) Chicken pox
C) Meningitis D) Flu
 
Answer & Explanation Answer: C) Meningitis

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 35372
Q:

A train of length 110 meter is running at a speed of 60 kmph. In what time, it will pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?

A) 10 B) 8
C) 6 D) 4
 
Answer & Explanation Answer: C) 6

Explanation:

Distance = 110 m

Relative speed = 60 + 6 = 66 kmph (Since both the train and the man are in moving in opposite direction)

= (66*5/18)  m/sec = 55/3  m/sec

Time taken to pass the man = (100*3/55) = 6 s

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Filed Under: Problems on Trains

81 35354
Q:

The diagonal of a rectangle is sqrt(41) cm.  and its area is 20 sq. cm. The perimeter of the rectangle must be:

A) 9 cm B) 18 cm
C) 20 cm D) 41 cm
 
Answer & Explanation Answer: B) 18 cm

Explanation:

l2+b2 = diagonal2=40

Also, lb=20

 

l+b2=l2+b2+2lb = 41 + 40 =81 

(l + b) = 9.

Perimeter = 2(l + b) = 18 cm.

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Filed Under: Volume and Surface Area

48 35333
Q:

If x is 80% of y, then what percent of 2x is y?

A) 65.5 % B) 64.5 %
C) 63.5 % D) 62.5 %
 
Answer & Explanation Answer: D) 62.5 %

Explanation:

 x = 80 % of y  

=> x =(80/100 )y  

=> y/x = 5/4  

Required percentage =  [(y/2x)*100] % = (5/8*100) % =62.5%

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Filed Under: Percentage

96 35208
Q:

The distance of the college and home of Rajeev is 80km. One day he was late by 1 hour than the normal time to leave for the college, so he increased his speed by 4km/h and thus he reached  to college  at the normal time. What is the changed (or increased) speed of Rajeev?

A) 28 km/h B) 30 km/h
C) 40 km/h D) 20 km/h
 
Answer & Explanation Answer: D) 20 km/h

Explanation:

Let the normal speed be x km/h, then 

80x-80(x+4)=1

⇒x2+4x-320=0

⇒x (x + 20) - 16 (x + 20) = 0

(x + 20 ) (x - 16) =0

 

x = 16 km/h

 Therefore (x + 4) = 20 km/h

 Therefore increased speed = 20 km/h

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Filed Under: Time and Distance

55 35148