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Quantitative Aptitude0%

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Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

Rakesh bought two T-Shirts which together cost him Rs.660. He sold one of the T-Shirts at a loss of 20% and the other one at a gain of 40%. The selling price of both T-Shirts are same. Then find out the cost price of both T-Shirts.

Correct

Explanation:
80/100 * x = 140/100 * y
x = 7/4y
x + y = 660
7/4 y + y = 660
y = 240 ; x = 420

Incorrect

Explanation:
80/100 * x = 140/100 * y
x = 7/4y
x + y = 660
7/4 y + y = 660
y = 240 ; x = 420

Question 2 of 10

2. Question

1 points

Category: Quantitative Aptitude

A van covers a distance of 392 km at a certain speed in 8 hours. How much time would a car take at an average speed which is 11 kmph more than that of the speed of the van to cover a distance which is 28 km more than that travelled by the van?

Correct

Explanation :
Speed of the truck = Distance/time = 392/8 = 49 kmph
Now, speed of car = (speed of van + 11) kmph = (49 + 11) = 60 kmph
Distance travelled by car = 392 + 28 = 420 km
Time taken by car = Distance/Speed = 420/60 = 7 hours.

Incorrect

Explanation :
Speed of the truck = Distance/time = 392/8 = 49 kmph
Now, speed of car = (speed of van + 11) kmph = (49 + 11) = 60 kmph
Distance travelled by car = 392 + 28 = 420 km
Time taken by car = Distance/Speed = 420/60 = 7 hours.

Question 3 of 10

3. Question

1 points

Category: Quantitative Aptitude

A pipe can fill a tank in 15 minutes and another pipe can fill it in 12 minutes, but a third pipe can empty it in 6 minutes. The first two pipes are kept open for 5 min in the beginning and then third pipe is also opened. Time taken to empty the water tank is?

Correct

Explanation :
x/6 – (x+5)/15 – (x+5)/12 = 0
x = 45 mins

Incorrect

Explanation :
x/6 – (x+5)/15 – (x+5)/12 = 0
x = 45 mins

Question 4 of 10

4. Question

1 points

Category: Quantitative Aptitude

The price of a Kawasaki Ninja bike is Rs. 12,50,000. It was insured to 80% of its price. The bike was damaged completely in an accident and the insurance company paid 90% of the insurance. What was the difference between the price of the car and the amount received?

The present age of Ramesh is one – fourth that of his father. After six years, the father’s age will be twice the age of Kumar. If kumar celebrated sixth birthday 8 year ago, What is the Ramesh’s Present age?

Correct

Explanation :
Kumar’s present age = 8 + 6 = 14
Kumar’s age after 6 years = 14 + 6 = 20
Kumar’s father age = 2 * 20 = 40
Father’s present age = 34
Ramesh’s present age = 34 / 4 = 8.5 years

Incorrect

Explanation :
Kumar’s present age = 8 + 6 = 14
Kumar’s age after 6 years = 14 + 6 = 20
Kumar’s father age = 2 * 20 = 40
Father’s present age = 34
Ramesh’s present age = 34 / 4 = 8.5 years

Question 6 of 10

6. Question

1 points

Category: Quantitative Aptitude

If the length of a rectangular field is increased by 20% and the breadth is reduced by 20%, the area of the rectangle will be 192m². What is the area of original rectangle?

Correct

Explanation :
length of rectangle = l m
breadth of rectangle = b m
l * (120/100) * b * (80/100) = 192
1.2l * 0.8b = 192
lb = 192 / 1.2 * 0.8 = 200 m²

Incorrect

Explanation :
length of rectangle = l m
breadth of rectangle = b m
l * (120/100) * b * (80/100) = 192
1.2l * 0.8b = 192
lb = 192 / 1.2 * 0.8 = 200 m²

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

Deepak borrows Rs.5000 at simple Interest from a lender. At the end of 3 years, she again borrows Rs.2000 and settled that amount after paying Rs.5000 as interest after 8 years from the time she made the first borrowing. what is the rate of interest?

Correct

Explanation:
SI for Rs.5000 for 8 years= (5000*r*8)/100
Again borrowed=2000
SI = (2000*r*5)/100
Total interest= [(5000*r*8)/100] + [(2000*r*5)/100] = 5000
400r + 100r = 5000
r = 10%

Incorrect

Explanation:
SI for Rs.5000 for 8 years= (5000*r*8)/100
Again borrowed=2000
SI = (2000*r*5)/100
Total interest= [(5000*r*8)/100] + [(2000*r*5)/100] = 5000
400r + 100r = 5000
r = 10%

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

Dinesh invests 12% of his monthly salary in Fixed Deposits. Later he invests 15% of his monthly salary on Life Insurance Policies. Total amount spent by him for Transports is Rs. 1800 per month. He also invests another 7% of his monthly salary on Mutual Funds. Amount invested by Deepak in Fixed Deposit is double of the amount spent by him for Transports. What is the total annual amount invested by Deepak?

Correct

Explanation:
Total amount spent by him for Transports = Rs. 1800
12% of x = 3600
x = 30,000
(12% + 15% + 7%) of 30,000 = 10,200
Annual Investment = 10200 * 12 = 1,22,400

Incorrect

Explanation:
Total amount spent by him for Transports = Rs. 1800
12% of x = 3600
x = 30,000
(12% + 15% + 7%) of 30,000 = 10,200
Annual Investment = 10200 * 12 = 1,22,400

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

40 boys and 62 girls form a group for social work. During their membership drive, an equal number of boys and girls also join the group. How many members does the group have now, if the ratio of boys to girls is 2:3?

Correct

Explanation:
[40 + x / 62 + x ] = 2/3
x = 4
40 + 62 + 4 + 4 = 110

Incorrect

Explanation:
[40 + x / 62 + x ] = 2/3
x = 4
40 + 62 + 4 + 4 = 110

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

If 8 examiners can examine a certain number of answer books in 12 days by working 5 hours a day, for how many hours a day would 4 examiners have to work in order to examine twice the number of answer books in 20 days.

Correct

Explanation:
x – number of answer books
y – hours
[8 * 12 * 5] / x = [4 * 20 * y] /2x
y = 12

Incorrect

Explanation:
x – number of answer books
y – hours
[8 * 12 * 5] / x = [4 * 20 * y] /2x
y = 12