6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If the average of 31, x, 42, 39, 56, 78, 83 and 91 is 58.5, then what is the value of x?

A) 26	B) 34
C) 58	D) 48

Answer & Explanation Answer: D) 48

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

8 39189

Q:

Tarun got 30% concession on the labelled price of an article and sold it for Rs. 8750 with 25% profit on the price he bought. What was the labelled price ?

A) 10000	B) 12000
C) 13000	D) 14000

Answer & Explanation Answer: A) 10000

Explanation:

Cost Price = $R s . [\frac{100}{125} \times 8750]$ = Rs. 7000. Let the labelled price be Rs. x.

Then, $\frac{70}{100} * x = 7000$ $\Rightarrow x = R s . (\frac{7000 * 100}{70})$

= Rs.10000

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Filed Under: Profit and Loss

200 39185

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 39032

Q:

If (8, 2) is a solution of x + 4y - 2k = 0 then find the value of k2.

A) 36	B) 49
C) 64	D) 81

Answer & Explanation Answer: C) 64

Explanation:

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

3 38917

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 38897

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 38820

Q:

What will come in place of the question mark in the series below?

2, 17, 89, 359, 1079, ?

A) 2137	B) 2121
C) 2377	D) 2159

Answer & Explanation Answer: D) 2159

Explanation:

Ans.
17 = 2 x 6 + 5
89 = 17 x 5 + 4
359 = 89 x 4 + 3
1079 = 359 x 3 + 2
? = 1079 x 2 + 1, i.e. ? = 2159

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Filed Under: Numbers
Exam Prep: AIEEE , Bank Exams , GATE

2 38808

Q:

Determine the nominal rate of interest if:

The periodic rate is 0.83% per month

A) 7%	B) 8%
C) 9%	D) 10%

Quantitative Aptitude - Arithmetic Ability Questions

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