Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average of X, Y, Z is 24. Also, X:Y = 2:3 and X+Y = 60, then find the value of (X-Z)?

A) 9 B) 10
C) 11 D) 12
 
Answer & Explanation Answer: D) 12

Explanation:

X+Y+Z = 24*3 = 72 X:Y = 2:3 (Given)
Let ‘X’ to be 2a & ‘Y’ to be 3a
X+Y = 60 (Given)
2a+3a = 60
5a = 60
a = 12
Hence, X = 24 & Y = 36
From equation (1)...
Z = 72 - 60
Z = 12
Hence, X - Z = 24-12 = 12.

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Filed Under: Average
Exam Prep: Bank Exams

0 2074
Q:

The minimum value of LCM of given numbers is ........... the product of all the given numbers.

A) always greater than B) always less than
C) always equal to D) None
 
Answer & Explanation Answer: D) None

Explanation:
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Filed Under: HCF and LCM
Exam Prep: Bank Exams

5 2074
Q:

20% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

A) 24 percent B) 25.2 percent
C) 25 percent D) 6 percent
 
Answer & Explanation Answer: A) 24 percent

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

2 2071
Q:

2/3 of a milk-water mixture was milk. There was 21 lit of the mixture. If 4 lit of water is added to it, the % of milk in the new mixture will be:

A) 56 B) 11
C) 44 D) 14
 
Answer & Explanation Answer: A) 56

Explanation:
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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

16 2071
Q:

Aman and Kapil starts from Delhi and Gwalior respectively towards each other at same time. They meet at Mathura and then take 196 minutes and 225 minutes respectively to reach Gwalior and Delhi. If speed of Aman is 30 km/hr, then what is the speed (in km/hr) of Kapil?

A) 28 B) 30
C) 225/7 D) 392/15
 
Answer & Explanation Answer: A) 28

Explanation:
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Filed Under: Time and Distance
Exam Prep: Bank Exams

3 2069
Q:

B would have taken 10 hours more than what A would have taken to complete a task if each of them worked alone. Working together they can complete the task in 12 hours. How many hours would B take to do 50% of the task?

A) 30 B) 15
C) 20 D) 10
 
Answer & Explanation Answer: B) 15

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

5 2068
Q:

Sum of four consecutive odd numbers is 208. Find the largest number.

A) 55 B) 57
C) 59 D) 61
 
Answer & Explanation Answer: A) 55

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

0 2065
Q:

A man gains 15% by selling a calculator for a certain price. If he sells it at the triple the price, then what will be the profit percentage?

A) 125 B) 175
C) 225 D) 245
 
Answer & Explanation Answer: D) 245

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

5 2063