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Q:

A man walks 6 km at a speed of $1 \frac{1}{2}$ kmph, runs 8 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed of the man in kmph.

$A) 4 \frac{3}{14}$

B) $4 \frac{2}{13}$

C) $2 \frac{4}{13}$

D) $3 \frac{4}{14}$

A) Option A	B) Option B
C) Option C	D) Option D

Answer & Explanation Answer: B) Option B

Explanation:

Man walked 6 km at 1.5 kmph, again he walked 8 km at speed of 2 kmph and 40 km at a speed of 8kmph
time taken indivisually:
=> 6/1.5 = 4 m
=> 8/2 = 4 m
=> 40/8 = 5 m

Average speed of man= total distance/ total time
=> 54/13 = $4 \frac{2}{13}$ kmph

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Filed Under: Time and Distance
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Q:

What is to be replaced in place of '?' in the following series ?

$A_{2} B C, ?, A B C_{4}, A_{5} B C$

A) $A_{3} B C$

B) $A B C_{3}$

C) $A B_{3} C$

D) $A_{2} B_{3} C_{4}$

A) Option A	B) Option B
C) Option C	D) Option D

Answer & Explanation Answer: C) Option C

Explanation:

Because the letters are the same, concentrate on the number series, which is a simple 2, 3, 4, 5, 6 series, and follows each letter in order.

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Filed Under: Number Series
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Q:

Which number replaces the '?' in the given series

108, 127, 2413, 2430, 41310, ?, 619875

A) 41975	B) 41325
C) 84375	D) 41365

Answer & Explanation Answer: B) 41325

Explanation:

The given series follows a pattern of +19, x19, +17, x17, +15, x15,...

Here the number which is to be replaced in ? is

41310+15=41325.

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Filed Under: Number Series
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Q:

In the question below consists of a question and two statements numbered a and b given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give the answer.

Question: In which year was Kalyan born ?
Statements:
a. Kalyan at present is 15 years younger to his mother.
b. Kalyan's brother, who was born in 1991, is 25 years younger to his mother.

A) b alone is sufficient while a alone is not sufficient	B) a alone is sufficient while b alone is not sufficient
C) Both a and b are sufficient	D) Neither a nor b is sufficient

Answer & Explanation Answer: C) Both a and b are sufficient

Explanation:

From both a and b, we find that Kalyan is (25 - 15) = 10 years older than his brother, who was born in 1991. So, Kalyan was born in 1981.

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Filed Under: Statement and Conclusions
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Q:

Group the given figures into three classes using each figure only once.

7_191484718448.png image

A) 1,4,7 ; 2,6,9 ; 3,5,8	B) 1,5,7 ; 2,6,9 ; 3,4,8
C) 1,6,9 ; 2,4,7 ; 3,5,8	D) 1,4,7 ; 3,6,9 ; 2,5,8

Answer & Explanation Answer: A) 1,4,7 ; 2,6,9 ; 3,5,8

Explanation:

3, 5, 8 have similar designs (four leaves placed close to a small circle and forming a symmetrical design at the centre of the figure).
2, 6, 9 have similar designs (three of the corners of the main figure are shaded black and there is a pattern formed around a ‘+’ sign at the centre of the figure).
1, 4, 7 have similar designs (there are four small circles at(the corners of the main figure and there is a wheel shaped element at the centre of the figure).

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Filed Under: Grouping of Images
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Q:

Two trains are running at 60 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 6 seconds. What is the length of the fast train ?

$A . 66 \frac{2}{3} m t s$

$B . 66 \frac{3}{2} m t s$

$C . 63 \frac{4}{5} m t s$

$D . 63 \frac{5}{4} m t s$

A) Option A	B) Option B
C) Option C	D) Option D

Answer & Explanation Answer: A) Option A

Explanation:

As Trains are moving in same direction,

Relative Speed = 60-20 = 40 kmph

--> $40 \times \frac{5}{18} = \frac{100}{9}$ m/sec

Length of Train= Speed * Time

Length = $\frac{100}{9} \times 6$

$\Rightarrow \frac{200}{3} = 66 \frac{2}{3} m t s$

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Filed Under: Problems on Trains
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Q:

Find the next number in the series 5, 8, 16, 19, 57, 60, .....

A) 188	B) 256
C) 240	D) 180

Answer & Explanation Answer: C) 240

Explanation:

The pattern is x1+3, x 2, x1+3, x 3, x1+3, x 4

The next number=60x4=240

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Filed Under: Number Series
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Q:

After working for 8 days, Arun finds that only $\frac{1}{3}$ rd of the work has been done. He employs Akhil who is 60% as efficient as Arun. How many days more would Akhil take to complete the work?

A) 24.5 days	B) 26.6 days
C) 25 days	D) 20 days

Answer & Explanation Answer: B) 26.6 days

Explanation:

Arun has completed $\frac{1}{3}$ rd of the work in 8 days

Then he can complete the total work in

$\frac{1}{3}$ ---- 8

1 ---- ?

= 24 days

But given Akhil is only 60% as efficient as Arun

Akhil = $\frac{1}{24} \times \frac{60}{100} = \frac{1}{40}$

Akhil can complete the total work in 40 days

Now, remaining 2/3rd of work can be completed in

1 ------ 40

$\frac{2}{3}$ ------ ?

= 26.66 days.

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Filed Under: Time and Work
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