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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

A and B start a business jointly. A invests Rs. 16,000 for 8 months and B remains in  the business for 4 months, Out of total profit, B claims - of the profit. How much money was contributed by B ?

A) 12000 B) 12800
C) 13000 D) 14500
 
Answer & Explanation Answer: B) 12800

Explanation:

Let the total profit be Rs. x. Then, B = 2x/7 and A = (x - 2x /7) =  5x / 7.

So, A : B = 5x/7 : 2x/7 = 5 : 2.

Let B s capital be Rs. y. Then, (16000 * 8) / ( y * 4) = 5/2  <=> (16000 * 8 * 2) / (5 * 4) = 12800..  

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Filed Under: Partnership

35 39187
Q:

The profit earned by selling an article for Rs 900 is double the loss incurred when the same article is sold for Rs.490. At what price should the article be sold to make 25% profit?

A) 715 B) 469
C) 400 D) 750
 
Answer & Explanation Answer: D) 750

Explanation:

Let C.P be Rs. x 

900 - x = 2(x - 450)     => x = Rs.600   

 

C.P = 600 gain required is 25% 

S.P = [(100+25) x 600] / 100 = Rs.750

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Filed Under: True Discount

63 39002
Q:

One side of a rectangular field is 15m and one of its diagonal is 17m. Find the area of field?

A) 110 B) 120
C) 130 D) 140
 
Answer & Explanation Answer: B) 120

Explanation:

Other side = [(17 x 17) - (15 x 15)] = (289 - 225) = 8m
Area = 15 x 8 =120 sq. m

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

73 38864
Q:

If a * b = 2a - 3b + ab, then 3 * 5 + 5 * 3  is equal to : 

A) 22 B) 23
C) 24 D) 25
 
Answer & Explanation Answer: A) 22

Explanation:

3 * 5 + 5 * 3 = (2 * 3 - 3 * 5 + 3 * 5) + ( 2 * 5 - 3 * 3 + 5 * 3)

                    = (6 + 10 - 9 + 15) = 22.

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Filed Under: Simplification

88 38720
Q:

Find the surface area (in cm2) of a sphere of diameter 28 cm.

 

A) 3422   B) 3852  
C) 2464   D) 3550
 
Answer & Explanation Answer: C) 2464  

Explanation:
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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

4 38646
Q:

A contractor undertakes to do a piece of work in 40 days. He engages 100 men at the begining and 100 more  after 35 days and completes the work in stipulated time. If he had not  engaged  the additional men, how many days  behind schedule would it be finished?

A) 3 B) 5
C) 6 D) 9
 
Answer & Explanation Answer: B) 5

Explanation:

[(100 x 35) + (200 x 5)]men can finish the work in 1 day 

Therefore, 4500 men can finish the work in 1 day. 100 men can finish it in  4500/100= 45 days.

This is 5 days behind Schedule

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Filed Under: Chain Rule

64 38581
Q:

The volume of a hemisphere is 2425.5 cm³. Find its diameter (in cm).

 

A) 10.5   B) 42
C) 21 D) 31.5
 
Answer & Explanation Answer: C) 21

Explanation:
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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 38528
Q:

A man walking at the rate of 5 km/hr crosses a bridge in 15 minutes. The length of the bridge (in metres) is

A) 600 B) 750
C) 1000 D) 1250
 
Answer & Explanation Answer: D) 1250

Explanation:

speed    = (5x5/18)m/sec
             = 25/18 m/sec.


Distance covered in 15 minutes    = (25/18 x 15 x 60)m
                                                 = 1250 m.

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Filed Under: Time and Distance

107 38372