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Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

By how much is 3/4th of 52 lesser than 2/3rd of 99?

Correct

Explanation:
(2/3)*99 – (3/4)*52

Incorrect

Explanation:
(2/3)*99 – (3/4)*52

Question 2 of 10

2. Question

1 points

Category: Quantitative Aptitude

5 years ago the total of ages of A and B was 37 years. 2 years hence, the ratio of ages of A to B will be 8 : 9. What is the difference in their present ages?

Correct

Explanation:
(A-5)+(B-5) = 37
So A+B = 47
Also (A+2)/(B+2) = 8/9
Solve, 9A – 8B = -2
Solve both equations, A = 22, B = 25, so difference = 3

Incorrect

Explanation:
(A-5)+(B-5) = 37
So A+B = 47
Also (A+2)/(B+2) = 8/9
Solve, 9A – 8B = -2
Solve both equations, A = 22, B = 25, so difference = 3

Question 3 of 10

3. Question

1 points

Category: Quantitative Aptitude

A train having length 300 m crossed a platform in 20 seconds. With same speed, the train crossed a man standing on the platform in 12 seconds. What is the length of the platform?

Correct

Explanation:
Speed of train = 300/12 = 25 m/s
So (300+x)/25 = 20
Solve, x = 200

Incorrect

Explanation:
Speed of train = 300/12 = 25 m/s
So (300+x)/25 = 20
Solve, x = 200

Question 4 of 10

4. Question

1 points

Category: Quantitative Aptitude

A student who secured 30% marks in an exam failed by 50 marks. Another student who secured 44% marks got 20 marks more than the pass marks. What is the passing percentage of the exam?

Correct

Explanation:
Let passing marks = x, max marks = y
So
(x-50)/y *100 = 30
And (x+20)/y * 100 = 44
Solve both equations, x = 200, y = 500
So passing percentage = 200/500 * 100

Incorrect

Explanation:
Let passing marks = x, max marks = y
So
(x-50)/y *100 = 30
And (x+20)/y * 100 = 44
Solve both equations, x = 200, y = 500
So passing percentage = 200/500 * 100

Question 5 of 10

5. Question

1 points

Category: Quantitative Aptitude

Cost price of 2250 articles is equal to the selling price of 3000 articles. What is the profit or loss%?

Correct

Explanation:
(3000-2250)/3000 * 100

Incorrect

Explanation:
(3000-2250)/3000 * 100

Question 6 of 10

6. Question

1 points

Category: Quantitative Aptitude

A, B and C invested Rs 400, Rs 500 and Rs 450 for 6 months. After this all added Rs 200 to their investments. If after a year a total profit of Rs 7700 is made, what is the share of B in the profit?

A and B can complete a work in 18 days and 24 days respectively. They start the work and A left after some days. Now C who can alone complete the same work in 10 days joined with B and they completed the remaining work in 5 days. For how many days did B work?

Correct

Explanation:
B worked for 5 days + the days after which A left.
Let A left after x days. so
(1/18)*x + (1/24)*(5+x) + (1/10)*5 = 1
Solve, x = 3
So B worked for 5+3 days

Incorrect

Explanation:
B worked for 5 days + the days after which A left.
Let A left after x days. so
(1/18)*x + (1/24)*(5+x) + (1/10)*5 = 1
Solve, x = 3
So B worked for 5+3 days

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

A’s monthly income is two-third B’s monthly income. B’s annual income is Rs 1,72,800. What is A’s annual income?

Correct

Explanation:
B’s monthly income = 1,72,800/12 = 14400
So A’s monthly = (2/3)* 14400 = 9600
So A’s annual = 9600*12

Incorrect

Explanation:
B’s monthly income = 1,72,800/12 = 14400
So A’s monthly = (2/3)* 14400 = 9600
So A’s annual = 9600*12

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

Measure of one of the angles of a parallelogram is 42 degree. What is the difference between the adjacent angles of the parallelogram?

Correct

Explanation:
Adjacent angles of the parallelogram add to 180 degree
So if one is 42, adjacent is 180-42 = 138
So difference = 138-42 = 96

Incorrect

Explanation:
Adjacent angles of the parallelogram add to 180 degree
So if one is 42, adjacent is 180-42 = 138
So difference = 138-42 = 96

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

The area of a square is equal to the area of a rectangle. The difference between the length and breadth of the rectangle is 48 cms and the breadth of the rectangle is 1/4th of its length. What is the side of square?

Correct

Explanation:
l – b = 48
and b = 1/4 * l
solve both, l = 64, b = 16
so area = 64*16 = 1024
so side of square = √1024

Incorrect

Explanation:
l – b = 48
and b = 1/4 * l
solve both, l = 64, b = 16
so area = 64*16 = 1024
so side of square = √1024