6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

When 0.232323.... is converted into a fraction , then the result is

A) 1/5	B) 2/9
C) 23/99	D) 23/100

Answer & Explanation Answer: C) 23/99

Explanation:

$0.232323 . . . = 0.23 = \frac{23}{99}$

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Filed Under: Decimal Fractions

73 51041

Q:

50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 cu.m , then the rise in the water level in the tank will be:

A) 20 cm	B) 25 cm
C) 35 cm	D) 50 cm

Answer & Explanation Answer: B) 25 cm

Explanation:

Total volume of water displaced =(4 x 50) cu.m = 200 cu.m

Rise in water level = $(\frac{200}{40 \times 20})$ =0.25m = 25cm

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Filed Under: Volume and Surface Area

64 51029

Q:

What is the total length intercepted between both the axes by the line 8x+4y=40?

A) 5	B) 10
C) 15	D) 20

Answer & Explanation Answer: C) 15

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

0 51016

Q:

If A is 40% less than B, then B is how much percentage more than A?

A) 72.33	B) 60
C) 40	D) 66.66

Answer & Explanation Answer: D) 66.66

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

1 50979

Q:

The G.C.D of 1.08, 0.36 and 0.9 is

A) 0.03	B) 0.9
C) 0.18	D) 0.108

Answer & Explanation Answer: C) 0.18

Explanation:

Given numbers are 1.08 , 0.36 and 0.90

H.C.F of 108, 36 and 90 is 18 [ $∵$ G.C.D is nothing but H.C.F]

Therefore, H.C.F of given numbers = 0.18

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Filed Under: HCF and LCM

138 50866

Q:

Reena took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If she paid Rs. 432 as interest at the end of the loan period, what was the rate of interest?

A) 3.6	B) 6
C) 18	D) Cannot be determined

Answer & Explanation Answer: B) 6

Explanation:

Explanation:

Let rate = R% and time = R years.

Then, $(\frac{1200 * R * R}{100}) = 432$

$12 R^{2} = 432$

=> $R^{2} = 36 \Leftrightarrow R = 6$

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Filed Under: Compound Interest

118 50818

Q:

If 20 men can build a wall 56 meters long in 6 days , what length of a similar wall can be built by 35 men in 3 days?

A) 46	B) 47
C) 48	D) 49

Answer & Explanation Answer: D) 49

Explanation:

Let the required length be x meters

More men, More length built (Direct proportion)

Less days, Less length built (Direct Proportion)

$\begin{array}{r} \begin{matrix} M e n & 20 : 35 \end{matrix} \\ \begin{matrix} D a y s & 6 : 3 \end{matrix} \end{array}\} ⋮ ⋮ 56 : x$

=> (20 x 6 x X)=(35 x 3 x 56)

=> x = 49

Hence, the required length is 49 m.

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Filed Under: Chain Rule

155 50785

Q:

Find the next number in the given number series?

96, 95, 87, 78, ?

A) 64	B) 57
C) 29	D) 14

Answer & Explanation Answer: D) 14

Explanation:

The given number series is 96, 95, 87, 78, ?

It follows a pattern that,

$96 96 - 1^{2} = 95 95 - 2^{3} = 95 - 8 = 87 87 - 3^{2} = 87 - 9 = 78 78 - 4^{3} = 78 - 64 = 14$

Hence, the next number in the given number series is 14.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

3 50783

Quantitative Aptitude - Arithmetic Ability Questions

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