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Quantitative Aptitude0%

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Review

Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

Directions (1 – 5): Study the pie-chart and table carefully to answer the questions that follow:
Pie-chart showing percentagewise distribution of cars in four different states and table shows the ratio of diesel and petrol cars manufactured by these companies out of total cars produced by these.

Companies

Diesel to Petrol Cars Ratio

A

3

4

B

5

9

C

5

3

D

1

1

What is the difference between the number of petrol cars manufactured by D and the number of diesel cars manufactured by B?

Directions (1 – 5): Study the pie-chart and table carefully to answer the questions that follow:
Pie-chart showing percentagewise distribution of cars in four different states and table shows the ratio of diesel and petrol cars manufactured by these companies out of total cars produced by these.

Companies

Diesel to Petrol Cars Ratio

A

3

4

B

5

9

C

5

3

D

1

1

Number of petrol cars manufactured by C is what percent more than the number of diesel cars manufactured by A?

Correct

Explanation:
Petrol by C = (3/8)*(32/100)*700 = 84
Diesel by A = (3/7)*(14/100)*700 = 42
Required % = (84-42)/42 * 100

Incorrect

Explanation:
Petrol by C = (3/8)*(32/100)*700 = 84
Diesel by A = (3/7)*(14/100)*700 = 42
Required % = (84-42)/42 * 100

Question 3 of 10

3. Question

1 points

Category: Quantitative Aptitude

Directions (1 – 5): Study the pie-chart and table carefully to answer the questions that follow:
Pie-chart showing percentagewise distribution of cars in four different states and table shows the ratio of diesel and petrol cars manufactured by these companies out of total cars produced by these.

Companies

Diesel to Petrol Cars Ratio

A

3

4

B

5

9

C

5

3

D

1

1

If 25% of diesel cars manufactured by C are not working and remaining diesel are working, what is the number of diesel cars manufactured by C are working?

Correct

Explanation:
Working = 75%
So working diesel in C = (75/100)*(5/8)*(32/100)*700

Incorrect

Explanation:
Working = 75%
So working diesel in C = (75/100)*(5/8)*(32/100)*700

Question 4 of 10

4. Question

1 points

Category: Quantitative Aptitude

Directions (1 – 5): Study the pie-chart and table carefully to answer the questions that follow:
Pie-chart showing percentagewise distribution of cars in four different states and table shows the ratio of diesel and petrol cars manufactured by these companies out of total cars produced by these.

Companies

Diesel to Petrol Cars Ratio

A

3

4

B

5

9

C

5

3

D

1

1

What is the difference between the total number of cars manufactured by C and the number of petrol cars manufactured by B?

Correct

Explanation:
Total by C= (32/100)*700 = 224
Petrol by B = (9/14)*(28/100)*700 = 126
224-126

Incorrect

Explanation:
Total by C= (32/100)*700 = 224
Petrol by B = (9/14)*(28/100)*700 = 126
224-126

Question 5 of 10

5. Question

1 points

Category: Quantitative Aptitude

Directions (1 – 5): Study the pie-chart and table carefully to answer the questions that follow:
Pie-chart showing percentagewise distribution of cars in four different states and table shows the ratio of diesel and petrol cars manufactured by these companies out of total cars produced by these.

Companies

Diesel to Petrol Cars Ratio

A

3

4

B

5

9

C

5

3

D

1

1

What is the approximate average number of petrol cars manufactured by all companies?

The speed of boat A is 4 km/hr less than the speed of boat B. The time taken by boat A to travel a distance of 16 km downstream is 2 hour more than time taken by B to travel the same distance downstream. If the speed of the current is one third the speed of boat A, what is the speed of boat A?

Correct

Explanation:
Speed of A = x, then of B = x+4
Speed of current = x/3
So downstream speed from boat A = x + x/3 = 4x/3
downstream speed from boat B = x+4 + x/3 = 4x/3 + 4
so 16/(4x/3) = 16/(4x/3 + 4) + 2
48/4x = 48/(4x+12) + 2
12/x = 12/(x+3) + 2
12(x+3) = 12x + 2 x(x+3)
x^{2} + 3x – 18 = 0
solve, x = 3

Incorrect

Explanation:
Speed of A = x, then of B = x+4
Speed of current = x/3
So downstream speed from boat A = x + x/3 = 4x/3
downstream speed from boat B = x+4 + x/3 = 4x/3 + 4
so 16/(4x/3) = 16/(4x/3 + 4) + 2
48/4x = 48/(4x+12) + 2
12/x = 12/(x+3) + 2
12(x+3) = 12x + 2 x(x+3)
x^{2} + 3x – 18 = 0
solve, x = 3

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

How many words can be made consisting of 2 consonants and 2 vowels out of 8 consonants and 3 vowels available?

Correct

Explanation:
For consonants, ways are 8C2 and for vowels, ways are 3C2
And for 4 words arrangement, ways are = 4!
So total = 8C2 * 3C2 * 4!

Incorrect

Explanation:
For consonants, ways are 8C2 and for vowels, ways are 3C2
And for 4 words arrangement, ways are = 4!
So total = 8C2 * 3C2 * 4!

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

Two varieties of rice at Rs 42 per kg and Rs 50 per kg respectively are mixed in the ratio 5 : 3. The mixture is then sold at Rs 36 per kg. What is the loss %?

Correct

Explanation:
Let CP of mixture is x
By method of allegation:
A……………….B
42………………50
. …………x
(50-x) (x-42)
Then, (50-x)/(x-42) = 5/3
Solve, x = 45 = CP
SP = 36
So loss% = [(45-36)/45] * 100

Incorrect

Explanation:
Let CP of mixture is x
By method of allegation:
A……………….B
42………………50
. …………x
(50-x) (x-42)
Then, (50-x)/(x-42) = 5/3
Solve, x = 45 = CP
SP = 36
So loss% = [(45-36)/45] * 100

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

The work which can be completed by 15 women in 4 days is same as work done by 12 men in 4 days. 6 men start the work and after 2 days they are replaced by some number of women who complete the remaining work in 3 days. Find the number of women employed.

Correct

Explanation:
12 m in 4 days do 1 work so 6 men in 2 days do 6*2/12*4 = 1/4th of work
Now 1 – (1/4) = 3/4 of work is remaining that is to be done by x women
15 w do 1 work in 4 days, so x women will do 3/4 work in 3 days
15*4*(3/4) = x*3*1

Incorrect

Explanation:
12 m in 4 days do 1 work so 6 men in 2 days do 6*2/12*4 = 1/4th of work
Now 1 – (1/4) = 3/4 of work is remaining that is to be done by x women
15 w do 1 work in 4 days, so x women will do 3/4 work in 3 days
15*4*(3/4) = x*3*1

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

A and B invested in a business as Rs 2500 and Rs 4500 respectively. After 4 months, A withdrew Rs 500 and B added Rs 500. What is the share of B in the total profit of Rs 6720 after a year?