4500 x ? = 3375

Byadmin July 18, 2022

Question:
4500 x ? = 3375

[A].

[B].

[C].

[D].

Answer: Option B

Explanation:

4500 x x = 3375 x =	337575	=	3
	4500100		4

Aptitude | Problems On Ages

The age of father 10 years ago was thrice the age of his son. Ten years hence, father’s age will be twice that of his son. The ratio of their present ages is:

Question: The age of father 10 years ago was thrice the age of his son. Ten years hence, father’s age will be twice that of his son. The ratio of their present ages is:
[A].

5 : 2
[B].
7 : 3
[C].
9 : 2
[D].
13 : 4

Answer: Option B

Explanation:

Let the ages of father and son 10 years ago be 3x and x years respectively.

Then, (3x + 10) + 10 = 2[(x + 10) + 10]

3x + 20 = 2x + 40

x = 20.

Required ratio = (3x + 10) : (x + 10) = 70 : 30 = 7 : 3.

Read More The age of father 10 years ago was thrice the age of his son. Ten years hence, father’s age will be twice that of his son. The ratio of their present ages is:
Aptitude | Clock

The reflex angle between the hands of a clock at 10.25 is:

Question: The reflex angle between the hands of a clock at 10.25 is:
[A].

180°
[B].

192 1 °

2

[C].
195°
[D].

197 1 °

2

Answer: Option D

Explanation:

Angle traced by hour hand in 125 hrs = 360 x 125 ° = 312 1 ° .

12 12 12 2

Angle traced by minute hand in 25 min = 360 x 25 ° = 150°.

60

Reflex angle = 360° – 312 1 – 150 ° = 360° – 162 1 ° = 197 1° .

2 2 2

Read More The reflex angle between the hands of a clock at 10.25 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 | Numbers

On dividing a number by 357, we get 39 as remainder. On dividing the same number 17, what will be the remainder ?

Question:
On dividing a number by 357, we get 39 as remainder. On dividing the same number 17, what will be the remainder ?

[A].

0
[B].
3
[C].
5
[D].
11

Answer: Option C

Explanation:

Let x be the number and y be the quotient. Then,

x = 357 x y + 39

= (17 x 21 x y) + (17 x 2) + 5

= 17 x (21y + 2) + 5)

Required remainder = 5.

Read More On dividing a number by 357, we get 39 as remainder. On dividing the same number 17, what will be the remainder ?
Basic Maths Mcqs | Boats and Streams | Mathematics Mcqs

A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?

A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?

A. 3.5km/hr
B. 5.5 km/hr
C. 6 km/hr
D. Data Inadequate
E. None of these
Explanation:
Speed downstream = 24/4 km/hr = 6 km/hr
Speed upstream = 24/6 km/hr = 4 km/hr
Speed of the boat in still water = ½ (6 +4)km/hr = 5 km/hr

Read More A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?
Aptitude | Volume And Surface Area

A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:

Question: A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:

[A].

90 cm
[B].
1 dm
[C].
1 m
[D].
1.1 cm

Answer: Option B

Explanation:

Let the thickness of the bottom be x cm.

Then, [(330 – 10) x (260 – 10) x (110 – x)] = 8000 x 1000

320 x 250 x (110 – x) = 8000 x 1000

(110 – x) = 8000 x 1000 = 100

320 x 250

x = 10 cm = 1 dm.

Read More A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:

192	1	°
	2

197	1	°
	2

Angle traced by hour hand in	125	hrs =		360	x	125		°	= 312	1	°	.
	12			12		12				2

Angle traced by minute hand in 25 min =		360	x 25		°	= 150°.
		60

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