Pipe A can fill a tank in 'a' hours. On account of a leak at the bottom of the tank it takes thrice as long to fill the tank. How long will the leak at the bottom of the tank take to empty a full tank, when pipe A is kept closed

1.  (3/2)a hours

2.  (2/3)a hours

3.  (4/3)a hours

4.  (3/4)a hours

5.  (5/3) a hours

View Answer  
5
Correct Answer :

(3/2)a hours


Explanation :
No Explanation available for this question

A and B working together can finish a job in T days. If A works alone and completes the job, he will take T + 5 days. If B works alone and completes the same job, he will take T + 45 days. What is T

1.  25 days

2.  60 days

3.  15 days

4.  24 days

View Answer  
4
Correct Answer :

60 days


Explanation :
No Explanation available for this question

A man can do a piece of work in 60 hours. If he takes his son with him and both work together then the work is finished in 40 hours. How long will the son take to do the same job, if he worked alone on the job

1.  20 hours

2.  120 hours

3.  24 hours

4.  48 hours

View Answer  
4
Correct Answer :

120 hours


Explanation :
No Explanation available for this question

Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and the work gets completed. How much more efficient is Ram than Ravi

1.  50%

2.  200%

3.  60%

4.  125%

5.  100%

View Answer  
5
Correct Answer :

100\%


Explanation :
No Explanation available for this question

The equation 2x2 + 2(p + 1)x + p = 0, where p is real, always has roots that are

1.  Equal

2.  Equal in magnitude but opposite in sign

3.  Irrational

4.  Real

5.  Complex Conjugates

View Answer  
5
Correct Answer :

Real


Explanation :
No Explanation available for this question

A gentleman buys every year Bank's cash certificates of value exceeding the last year's purchase by Rs. 300. After 20 years, he finds that the total value of the certificates purchased by him is Rs. 83,000. Find the value of the certificates purchased by him in the 13th year.

1.  Rs.4900

2.  Rs.6900

3.  Rs.1300

4.  None of these

View Answer  
4
Correct Answer :

Rs.4900


Explanation :
No Explanation available for this question

The difference between the compound interest and simple interest on a certain sum at 10% per annum for 2 years is Rs. 631. Find the sum.

1.  Rs 6,310

2.  Rs 63,100

3.  Rs 6, 31,000

4.  Rs 63, 10,000

5.   cannot be determined

View Answer  
5
Correct Answer :

Rs 63,100


Explanation :
No Explanation available for this question

The difference between the compound interest and simple interest accrued on an amount of Rs. 18,000 in 2 years was Rs. 405. Find the rate of interest, if it same in the case of simple and compound interest

1.  10%

2.  12.5%

3.  17.5%

4.  20%

View Answer  
4
Correct Answer :

17.5\%


Explanation :
No Explanation available for this question

I kept Rs. 20,000 at 5% rate of simple interest for two years. Find the difference in interest  earned  if  I  had  kept  the  same  amount  for  same  years  at  same  rate  but  at compound interest.

1.  Rs 1

2.  Rs 2

3.  Rs 5

4.  Rs 20

5.  Rs 50

View Answer  
5
Correct Answer :

Rs 50


Explanation :
No Explanation available for this question

If the rate of interest in case of both compound and simple interest is 8.33%, find the ratio of the compound interest and simple interest earned in first 2 years on the same principal

1.  25 : 24

2.  24 : 25

3.  11 : 12

4.  12 : 1

5.  None of these

View Answer  
5
Correct Answer :

25 : 24


Explanation :
No Explanation available for this question
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