Quantitative Aptitude - Arithmetic Ability Questions

Q:

The bus fare between two cities is increased in the ratio 29:31. What is the increase in the fare, if the original fare is Rs 725

A) Rs 50 B) Rs 775
C) Rs 155 D) Rs 310
 
Answer & Explanation Answer: A) Rs 50

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

ΔDEF is similar to ΔGHI. Length of DE is 9 cm and length of the corresponding side GH is 16 cm. What is the ratio of areas of Δ DEF : Δ GHI?

A) 3:4 B) 9:16
C) 81:256 D) 16:9
 
Answer & Explanation Answer: C) 81:256

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Filed Under: Ratios and Proportions
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Q:

The line passing through (-2,5) and (6,b) is perpendicular to the line 20x + 5y = 3. Find b?

A) -7 B) 4
C) 7 D) -4
 
Answer & Explanation Answer: C) 7

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Filed Under: Simplification
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Q:

In the given figure, PQ = 30, RS = 24 and OM = 12, then what is the value of ON?

A) 9 B) 12
C) 15 D) 18
 
Answer & Explanation Answer: C) 15

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

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Q:

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If lengths of PS, SQ and PR are 6 cm, 9 cm and 12.5 cm respectively, what is the length of TR?

A) 7.5 cm B) 5 cm
C) 10 cm D) 2.5 cm
 
Answer & Explanation Answer: A) 7.5 cm

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

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Q:

A map is drawn at a scale of 2 mm for 500 kms. Two places are marked at the distance of 3.6 mm; calculate the distance (in kms) between these two places?

A) 900 B) 800
C) 750 D) 960
 
Answer & Explanation Answer: A) 900

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ratio of the number of boys to the number of girls in the class is:-

A) 1:2  B) 2:3
C) 3:4 D) 3:5
 
Answer & Explanation Answer: B) 2:3

Explanation:

Let the ratio be x : y
Total boys = 16.4 X x
Total girls = 15.4 X y
Total number of students in class = 16.4x + 15.4y
The average age of all students is 15.8
The total age of boys is 15.8x
The total age of girls is 15.8y
16.4x + 15.4y = 15.8x + 15.8y
0.6 x = 0.4 y
x/y = 0.4/0.6 = 2/3

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Filed Under: Ratios and Proportions
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Q:

If a – b = 11 and ab = 24, then value of a2 + b2 is

A) 169 B) 37
C) 73 D) 48
 
Answer & Explanation Answer: A) 169

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Filed Under: Simplification
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