6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

P can complete a work in 12 days working 8 hours a day.Q can complete the same work in 8 days working 10 hours a day. If both p and Q work together,working 8 hours a day,in how many days can they complete the work?

A) 60/11	B) 61/11
C) 71/11	D) 72/11

Answer & Explanation Answer: A) 60/11

Explanation:

P can complete the work in (12 x 8) hrs = 96 hrs

Q can complete the work in (8 x 10) hrs=80 hrs

Therefore, P's 1 hour work=1/96 and Q's 1 hour work= 1/80

(P+Q)'s 1 hour's work =(1/96) + (1/80) = 11/480. So both P and Q will finish the work in 480/11 hrs

Therefore, Number of days of 8 hours each = (480/11) x (1/8) = 60/11

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Filed Under: Time and Work

239 83165

Q:

Select the odd letters from the given alternatives.

A) ZXV	B) GDA
C) NKH	D) URO

Answer & Explanation Answer: A) ZXV

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 82927

Q:

Solve the following :

$\{38 - (60 \div 5 x 16 - 8 \div 2 \div 3)\} = ?$

A) 22	B) 29
C) 30	D) 37

Answer & Explanation Answer: A) 22

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

2 82608

Q:

Fill in the blanks

sinA = _____ x cosA

A) sinA	B) tanA
C) cotA	D) cosA

Answer & Explanation Answer: B) tanA

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

1 82594

Q:

Pick the odd man out of the folowing number sequence?

123 112 133 112 143

A) 143	B) 122
C) 133	D) 112

Answer & Explanation Answer: B) 122

Explanation:

Here the given series is 123 112 133 112 143

It follows a pattern that,

123

123 - 11 = 112

112 + 21 = 133

133 - 31 = 102 (not 122)

102 + 41 = 143

Hence, the odd man in the given number sequence is 122 instead of 102.

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

4 82502

Q:

If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to:

A) 55/601	B) 601/55
C) 11/120	D) 120/11

Answer & Explanation Answer: C) 11/120

Explanation:

Let the numbers be a and b.

Then, a + b = 55 and ab = 5 x 120 = 600.

The required sum = $\frac{1}{a} + \frac{1}{b}$ = $\frac{a + b}{a b}$ = $\frac{55}{600}$ = $\frac{11}{120}$

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Filed Under: HCF and LCM

135 82440

Q:

The average of two numbers is 10 and the product of two numbers is 96. Find the two numbers.

A) 3, 32	B) 12, 8
C) 1, 96	D) 24, 4

Answer & Explanation Answer: B) 12, 8

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

4 82271

Q:

The length and breadth of a rectangle are 15 cm and 8 cm respectively. Calculate its perimeter (in cm).

A) 46	B) 92
C) 35	D) 70

Quantitative Aptitude - Arithmetic Ability Questions

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