Aptitude and Reasoning Questions

Q:

The mean of marks secured by 55 students in division A of class X is 58, 45 students of division B is 54 and that of 75 students of division C is 52. Find the mean of marks of the students of three divisions of Class X.

A) 53.7 B) 54.4
C) 53 D) 55.8
 
Answer & Explanation Answer: B) 54.4

Explanation:
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Filed Under: Average
Exam Prep: Bank Exams

0 1894
Q:

If the price of onion increases from Rs 24/kg to Rs 36/kg, then by what percentage a household should decrease the consumption of onion so that
expenditure remains same?

A) 25 B) 33.33
C) 50 D) 20
 
Answer & Explanation Answer: B) 33.33

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Filed Under: Percentage
Exam Prep: Bank Exams

5 1894
Q:

Cost price of a pen is 50 Rs. and that of notebook is 140 Rs. If pen is sold at 200% profit, then to purchase 10 such note books how many pens are required to sell if only profit money is used to buy notebooks?

A) 14 B) 18
C) 15 D) 20
 
Answer & Explanation Answer: A) 14

Explanation:

C.P. of 10 note books ⇒ 140 × 10 = 1400 Rs.
Profit on selling one pen ⇒ 50×200/100 = Rs 100
Number of pen required ⇒ 1400/100 = 14

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0 1894
Q:

If a + b = 11 and a2+ b2= 61, then value of ab is

A) 12 B) 96
C) 24 D) 30
 
Answer & Explanation Answer: D) 30

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Filed Under: Simplification
Exam Prep: Bank Exams

2 1893
Q:

In the given figure, PQR is a quadrant whose radius is 7 cm. A circle is inscribed in the quadrant as shown in the figure. What is the area (in sq.cm) of the circle?

 

A) 385 – 221√2 B) 308 – 154√2
C) 154 – 77√2 D) 462 – 308√2
 
Answer & Explanation Answer: D) 462 – 308√2

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Filed Under: Area
Exam Prep: Bank Exams

1 1892
Q:

40 men took a dip in a pool 30 m long and 25 m broad. If the average water displaced by a man is 5 cub.m, then what will be the rise (in cm) in level of the pool?

A) 25 B) 26.66
C) 27.33 D) 28.5
 
Answer & Explanation Answer: B) 26.66

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

0 1892
Q:

If the cost price of 25 pens is equal to the selling price of 20 pens, then the profit percent is

A) 20% B) 25%
C) 15% D) 5%
 
Answer & Explanation Answer: B) 25%

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

1 1891
Q:

Ranjith can complete a task in 25 days while Anji can finish it in 20 days. They work together on the task for 5 days and then Ranjith leaves. In how many days will Anji finish the remaining work?

A) 15 days B) 10 days
C) 11 days D) 9 days
 
Answer & Explanation Answer: C) 11 days

Explanation:

Lcm of 25 and 20 is 100. So total work = 100 units
Ranjith can do 4 units per day while anju can do 5 units per day
They together complete 5 days of work i.e 9 x 5 = 45 units
The remaining 55 units of work is done by anju in 55/5 days (or) 11 days

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Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams , CAT

2 1891