Aptitude | Decimal Fraction

3889 + 12.952 – ? = 3854.002

Byadmin July 18, 2022

Question:
3889 + 12.952 – ? = 3854.002

[A].

47.095

[B].

47.752

[C].

47.932

[D].

47.95

Answer: Option D

Explanation:

Let 3889 + 12.952 – x = 3854.002.

Then x = (3889 + 12.952) – 3854.002

= 3901.952 – 3854.002

= 47.95.

Aptitude | Area

A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:

Question:
A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:

[A].

Rs. 456
[B].
Rs. 458
[C].
Rs. 558
[D].
Rs. 568

Answer: Option C

Explanation:

Area to be plastered = [2(l + b) x h] + (l x b)

= {[2(25 + 12) x 6] + (25 x 12)} m2

= (444 + 300) m2

= 744 m2.

Cost of plastering = Rs. 744 x 75 = Rs. 558.

100

Read More A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:
Aptitude | Area

A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is:

Question:
A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is:

[A].

10%
[B].
10.08%
[C].
20%
[D].
28%

Answer: Option D

Explanation:

Let original length = x and original breadth = y.

Decrease in area

= xy – 80 x x 90 y

100 100

= xy – 18 xy

25

= 7 xy.

25

Decrease % = 7 xy x 1 x 100 % = 28%.

25 xy

Read More A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is:
Aptitude | Numbers

In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient ?

Question:
In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient ?

[A].

0
[B].
12
[C].
13
[D].
20

Answer: Option D

Explanation:

Number = (12 x 35)

Correct Quotient = 420 21 = 20

Read More In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient ?
Aptitude | Odd Man Out And Series

2, 4, 12, 48, 240, (….)

Question:
2, 4, 12, 48, 240, (….)

[A].

960
[B].
1440
[C].
1080
[D].
1920

Answer: Option B

Explanation:

Go on multiplying the given numbers by 2, 3, 4, 5, 6.

So, the correct next number is 1440.

Read More 2, 4, 12, 48, 240, (….)
Aptitude | Odd Man Out And Series

46080, 3840, 384, 48, 24, 2, 1

Question: 46080, 3840, 384, 48, 24, 2, 1

[A].

1
[B].
2
[C].
24
[D].
384

Answer: Option C

Explanation:

The terms are successively divided by 12, 10, 8, 6, …etc.

So, 24 is wrong, it should be 8 (48/6 = 8).

Read More 46080, 3840, 384, 48, 24, 2, 1
Aptitude | Volume And Surface Area

A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:

Question:
A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:

[A].

4830
[B].
5120
[C].
6420
[D].
8960

Answer: Option B

Explanation:

Clearly, l = (48 – 16)m = 32 m,

b = (36 -16)m = 20 m,

h = 8 m.

Volume of the box = (32 x 20 x 8) m3 = 5120 m3.

Read More A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:

Area to be plastered	= [2(l + b) x h] + (l x b)
	= {[2(25 + 12) x 6] + (25 x 12)} m2
	= (444 + 300) m2
	= 744 m2.

Cost of plastering = Rs.		744 x	75		= Rs. 558.
			100

Decrease % =		7	xy x	1	x 100	%	= 28%.
		25		xy

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