Quantitative Aptitude - Arithmetic Ability Questions

Q:

A student multiplied a number by 3/10 instead of 10/3. What is the percentage error in the calculation?

A) 1011.11 percent B) 45.5 percent
C) 91 percent D) 505.56 percent
 
Answer & Explanation Answer: C) 91 percent

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?

A) 6.2 m B) 6.5 m
C) 6.8 m D)  7.5 m
 
Answer & Explanation Answer: B) 6.5 m

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Filed Under: Height and Distance
Exam Prep: Bank Exams

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Q:

Area of circle is equal to the area of a rectangle having perimeter of 50 cms. and length more than the breadth by 3 cms. What is the diameter of the circle?

A) 7 cms B) 21 cms
C) 28 cms D) 14 cms
 
Answer & Explanation Answer: D) 14 cms

Explanation:

Let the breadth of rectangle be x cm => Length of rectangle = (x+3) cm Now, perimeter =2(x+x+3) = 50 => 2x + 3 = 25 => x = 11 Thus, breadth = 11 cm and length = 14 cm Area of circle = Area of rectangle =>pi * r* r = 14 * 11 =>r*r = 14 * 11 * 7/22 =>r = 7 cm Diameter = 2 * 7 = 14 cm

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Filed Under: Area

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Q:

Two trains are moving in the opposite direction at speed of 30 km/hr and 45 km/hr respectively, whose lengths are 450 m and 550 m respectively. What is the time taken (in seconds) by slower train to cross the faster train?

A) 48 B) 54
C) 62 D) 72
 
Answer & Explanation Answer: A) 48

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Filed Under: Problems on Trains
Exam Prep: Bank Exams

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Q:

Cost price of an article is Rs 5800. If the loss percentage is 33%, then what is the selling price (in Rs) of the article?

A) 3886 B) 3424
C) 4420 D) 5168
 
Answer & Explanation Answer: A) 3886

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

What is the ratio of simple interest earned on certain amount at the rate of 12% p.a. for 9 years and that for 12 years?

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

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

(1155) +(18 − 6) × 9 =?

A) 113 B) 115
C) 100 D) 110
 
Answer & Explanation Answer: A) 113

Explanation:

Given,(1155) +(18 − 6) =?

                                 =5 + 12 × 9
                                 =5 + 108

                                 =113

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

A watch is listed for Rs.230 and is sold at a discount of 12%, then the sale price of the watch is

A) Rs.27.6 B) Rs.276
C) Rs.202.4 D) Rs.257.6
 
Answer & Explanation Answer: C) Rs.202.4

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