MCQs Preparation - Page 50 of 65

If Asif is standing in a queue in such a way that he is sixth in the queue from either side, then how many people are there in the queue?

A. 11
B. 12
C. 9
D. 14

Answer

A. 11

Solution

Let, the five people from one side be A,B,C,D,E

and the five people from other side be V,W,X,Y,Z

then the queue will be

A, B, C, D, E, Asif, V, W, X, Y, Z

therefore, 11 people are there in the queue.

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A rectangular room is 6m long, 5m wide and 4m high. What is the total volume of the room in cubic meters?

A. 24
B. 30
C. 120
D. 240

Answer

C. 120

Solution

Given:
l=6m
b=5m
h=4m

Therefore,
Volume of the room = l×b×h
Volume of the room = (6×5×4)m³
Volume of the room = 120m³

A rectangular room is 6m long, 5m wide and 4m high. What is the total volume of the room in cubic meters? Read More »

8 machines can do a piece of work in 10 days. How long will it take 16 machines to do the work?

A. 7 days
B. 6 days
C. 5 days
D. 8 days

Answer

C. 5 days

Solution

1 machine will complete the piece of work in 8×10 days.
So,
16 machines will do in = (8*10)/16
16 machines will do in = 5 days

8 machines can do a piece of work in 10 days. How long will it take 16 machines to do the work? Read More »

The sum of three numbers is 98. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is?

A. 20
B. 30
C. 48
D. 58

Answer

B. 30

Solution

Let the three numbers be A,B and C respectively
A:B = 2:3 ———— i
B:C = 5:8 ———— ii

Multiplying (i) by 5 and (ii) by 3,

A:B = 10:15
B:C = 15:24

A:B:C=10:15:24

Sum of ratio = 10+15+24=49
B = (15/49)*90
B = 30

The sum of three numbers is 98. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is? Read More »

The ratio of 500: 1500?

A. 2: 3
B. 1:3
C. 5: 10
D. 10: 15

Answer

B. 1:3

Solution

Divide both side with highest common factor.

Here, 500 is highest common factor.

500/500:1500/500

1:3 (Answer)

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In what ratio should the profit be divided if M, N, O invests capital in ratio 2:3:5 and their timing of their investments are in the ratio 4:5:6.

A. 8:15:30
B. 5:18:28
C. 4:5:6
D. 2:3:5

Answer

A. 8:15:30

Solution

Let the three ratio be P1, P2 and P3.

M, N, O invests in ratio 2:3:5

and their timing of investments are in the ratio 4:5:6

so we have to multiply invest ratio with their timings.

So,

P1:P2:P3=(2*4):(3*5):(5*6)

P1:P2:P3=8:15:30

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In what ratio should the profit be divided if M, N, O invests capital in ratio 2:3:5 and their timing of their investments are in the ratio 4:5:6. Read More »

Two numbers are in the ratio 5:4 and their difference is 10.What is the largest number?

A. 40
B. 50
C. 60
D. 30

Answer

B. 50

Solution

Let the the two numbers be 5x and 4x, then

the difference of the two numbers will be:

5x-4x=10

x=10

now, let’s find the numbers

5*10

=50

4*10

=40

so, the largest number is 50.

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What is the ratio of Faheem’s salary to Imran’s salary to Naveed’s salary if Faheem makes 80,000 rupees ,Imran 70,000 rupees and Naveed makes 50,000 rupees ?

A. 80:70:60
B. 8:7:5
C. 4:7:5
D. 7:8:5

Answer

B. 8:7:5

Solution

Faheem : Imran : Naveed

80000 : 70000 : 50000

divide all by 10000

8 : 7 : 5

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What is the ratio of Faheem’s salary to Imran’s salary to Naveed’s salary if Faheem makes 80,000 rupees ,Imran 70,000 rupees and Naveed makes 50,000 rupees ? Read More »

Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are:

A. 39, 30
B. 41, 32
C. 42, 33
D. 43, 34

Answer

C. 42, 33

Solution

Let one of the students secure x marks.

then, the other student secures (x+9) marks.

the sum of both their marks is equal to

56% of the sum of both means

56% of x+x+9 (x+9 obtained 56% marks when we both students marks)

(56/100)* x+x+9

so,

x+9=56% of (x+x+9)

x+9=(56/100)*(2x+9)

x+9=(112x+504)/100

100(x+9)=112x+504

100x+900=112x+504

900-504=112x-100x

396=12x

396/12=x

33=x

x=33

so the mark of other student will be

x+9

33+9

Marks obtained by both students are 33 and 42.

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Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are: Read More »

40% of a number is more than 20% of 650 by 190. Find the number?

A. 600
B. 700
C. 800
D. 900

Answer

C. 800

Solution

Let the number be x.

40% of a number means: (40/100) * x

20% of 650 means: (20/100)*650

by means = 190

So,

(40/100)*x is more than (20/100) * 650 means (40/100)*x is higher than (20/100)*650

Therefore,

(40/100)*x-(20/100)*650=190

40x/100-(20*650)/100=190

2x/5-130=190

2x/5=190+130

2x/5=320

2x=320*5

2x=1600

x=1600/2

x=800 (Answer)

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40% of a number is more than 20% of 650 by 190. Find the number? Read More »