Quantitative Aptitude - Arithmetic Ability Questions

Q:

The sum of the ages of father and a son presently is 70 years. After 10 years, the son's age is exactly half that of the father. What are their ages now?

A) 45 years, 25 years B) 50 years, 20 years
C) 47 years, 23 years D) 50 years, 25 years
 
Answer & Explanation Answer: B) 50 years, 20 years

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases by 3 months. Find the age of the teacher.

A) 30 B) 25
C) 35 D) 40
 
Answer & Explanation Answer: B) 25

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

If a:b = 5:8, find the value of (6a -­ 5b)/(a + 2b).

A) 10/21 B) -21/10
C) 21/10 D) -10/21
 
Answer & Explanation Answer: D) -10/21

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

0 1787
Q:

Line segment AB is parallel to line segment CD. AD intersects BC in E. If lengths of AE, BC and ED are 12 cm, 12 cm and 18 cm respectively, what is the length of EC?

A) 4.8 cm B) 9.3 cm
C) 8.1 cm D) 7.2 cm
 
Answer & Explanation Answer: D) 7.2 cm

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

At what rate of compound interest per annum will a sum of Rs 10000 become Rs 12321 in 2 years?

A) 22 percent B) 11 percent
C) 7 percent D) 15 percent
 
Answer & Explanation Answer: B) 11 percent

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Filed Under: Compound Interest
Exam Prep: AIEEE , Bank Exams , CAT

12 1786
Q:

The ratio of milk and water in three samples is 1 : 3, 3 : 5 and 11 : 5. A mixture containing equal quantities of all three samples is made. What will be the ratio of milk and water in the new mixture?

A) 7 : 9 B) 5 : 7
C) 15 : 13 D) 9 : 11
 
Answer & Explanation Answer: A) 7 : 9

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

Ehsaan is twice as good a worker as Kamal and together they finish a piece of work in 29 days. In how many days will Kamal, working alone, finish the work?

A) 58 B) 70
C) 87 D) 116
 
Answer & Explanation Answer: C) 87

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Filed Under: Time and Work
Exam Prep: Bank Exams

2 1785
Q:

A piece of work was finished by A, B and C together. A and B together finished 60% of the work and B and C together finished 70% of the work. Who among the three is most efficient?

A) A B) B
C) C D) None
 
Answer & Explanation Answer: C) C

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Filed Under: Time and Work
Exam Prep: Bank Exams

1 1785