Aptitude | Numbers

(35423 + 7164 + 41720) – (317 x 89) = ?

Byadmin July 18, 2022

Question:
(35423 + 7164 + 41720) – (317 x 89) = ?

[A].

28213

[B].

84307

[C].

50694

[D].

56094

Answer: Option D

Explanation:

35423 317 x 89 = 317 x (90 -1 )
+ 7164 = (317 x 90 – 317)
+ 41720 = (28530 – 317)
—– = 28213
84307
– 28213
—–
56094
—–

Aptitude | Races and Games

In a 300 m race A beats B by 22.5 m or 6 seconds. B’s time over the course is:

Question:
In a 300 m race A beats B by 22.5 m or 6 seconds. B’s time over the course is:

[A].

86 sec
[B].
80 sec
[C].
76 sec
[D].
None of these

Answer: Option B

Explanation:

B runs 45 m in 6 sec.

2

B covers 300 m in 6 x 2 x 300 sec = 80 sec.

45

Read More In a 300 m race A beats B by 22.5 m or 6 seconds. B’s time over the course is:
Aptitude | Numbers

3251 + 587 + 369 – ? = 3007

Question:
3251 + 587 + 369 – ? = 3007

[A].

1250
[B].
1300
[C].
1375
[D].
1200

Answer: Option D

Explanation:

3251 Let 4207 – x = 3007
+ 587 Then, x = 4207 – 3007 = 1200
+ 369
—-
4207
—-

Read More 3251 + 587 + 369 – ? = 3007
Aptitude | Banker's Discount

The banker’s gain on a bill due 1 year hence at 12% per annum is Rs. 6. The true discount is:

Question:
The banker’s gain on a bill due 1 year hence at 12% per annum is Rs. 6. The true discount is:

[A].

Rs. 72
[B].
Rs. 36
[C].
Rs. 54
[D].
Rs. 50

Answer: Option D

Explanation:

T.D. = B.G. x 100 = Rs. 6 x 100 = Rs. 50.

R x T 12 x 1

Read More The banker’s gain on a bill due 1 year hence at 12% per annum is Rs. 6. The true discount is:
Aptitude | Problems on H.C.F and L.C.M

The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is:

Question: The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is:

[A].

101
[B].
107
[C].
111
[D].
185

Answer: Option C

Explanation:

Let the numbers be 37a and 37b.

Then, 37a x 37b = 4107

ab = 3.

Now, co-primes with product 3 are (1, 3).

So, the required numbers are (37 x 1, 37 x 3) i.e., (37, 111).

Greater number = 111.

Read More The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is:

Aptitude | Problems On Trains

How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?

Question: How many seconds will a 500 metre long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?
[A].

[B].

[C].

[D].

Answer: Option B

Explanation:

Speed of the train relative to man

= (63 – 3) km/hr

= 60 km/hr

=		60 x	5		m/sec
			18

=		50		m/sec.
		3

Time taken to pass the man

=		500 x	3		sec
			50

= 30 sec.

Aptitude | Banker's Discount

The certain worth of a certain sum due sometime hence is Rs. 1600 and the true discount is Rs. 160. The banker’s gain is:

Question:
The certain worth of a certain sum due sometime hence is Rs. 1600 and the true discount is Rs. 160. The banker’s gain is:

[A].

Rs. 20
[B].
Rs. 24
[C].
Rs. 16
[D].
Rs. 12

Answer: Option C

Explanation:

B.G. = (T.D.)2 = Rs. 160 x 160 = Rs. 16.

P.W. 1600

Read More The certain worth of a certain sum due sometime hence is Rs. 1600 and the true discount is Rs. 160. The banker’s gain is:

B runs	45	m in 6 sec.
	2

B covers 300 m in		6 x	2	x 300	sec	= 80 sec.
			45

T.D. =	B.G. x 100	= Rs.		6 x 100		= Rs. 50.
	R x T			12 x 1

B.G. =	(T.D.)2	= Rs.		160 x 160		= Rs. 16.
	P.W.			1600

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