A 40 L solution contains spirit and water in the ratio 3 : 1. How much water should be added to bring the ratio to 5 : 2

1.  2 L

2.  3 L

3.  4 L

4.  3.8 L

5.  5 L

View Answer  
5
Correct Answer :

2 L


Explanation :
No Explanation available for this question

How many litres of a 3% hydrogen peroxide solution should be mixed with a 6 L of a 30% hydrogen peroxide solution so as to get a 12% solution

1.  3 L

2.  6 L

3.  9 L

4.  12 L

5.  15 L

View Answer  
5
Correct Answer :

12 L


Explanation :
No Explanation available for this question

The population of a town is 3, 11,250. The ratio of the number of men and women is 1075: 1000. There are 24% literates among men and 8% literates among women. What is the total number of literate people in the town Approximately what percentage of people in the town are illiterate?

1.  48,900, 72.6%

2.  4,8000, 70%

3.  50,700,83.75%

4.  77,812, 75%

5.  None of these

View Answer  
5
Correct Answer :

None of these


Explanation :
No Explanation available for this question

In a factory men, women and children were employed in the ratio 8 : 5 : 1 to finish a job and their individual wages were in the ratio 5 : 2 : 3. When 20 women were employed, total daily wages of all amounted to Rs. 318. Find the total daily wages paid to each category.

1.  Rs. 280, Rs. 70 and Rs. 110

2.  Rs. 240, Rs. 60, and Rs. 18

3.  Rs. 380, Rs. 318, and Rs. 110

4.  Rs. 160, Rs. 118, Rs. 40

5.  Cannot be determined

View Answer  
5
Correct Answer :

Rs. 240, Rs. 60, and Rs. 18


Explanation :
No Explanation available for this question

A river flows at 4 km/hr. A boat can go downstream thrice as fast as it can go upstream. Find out the speed of the boat in still water.

1.  8 km/hr

2.  4 km/hr

3.  6 km/hr

4.  12 km/hr

5.  Cannot be determined

View Answer  
5
Correct Answer :

8 km/hr


Explanation :
No Explanation available for this question

A vessel contains 40 L milk. The milkman delivers 10 L to the first house, and adds an equal quantity of water. He does exactly the same at second and third houses. What is the ratio of milk and water when he has finished delivering at the third house

1.  27 : 37

2.  26 : 38

3.  1 : 4

4.  3 : 4

5.  None of these

View Answer  
5
Correct Answer :

27 : 37


Explanation :
No Explanation available for this question

The average age of the members of a club increases to 27 when 3 more persons whose average age is 29 join them from 26. What is the number of members in the club now

1.  6

2.  9

3.  12

4.  5

5.  10

View Answer  
5
Correct Answer :

9


Explanation :
No Explanation available for this question

The ratio of spirit and water in a mixture is 1 : 3. If the volume of the solution is increased by 25% by adding spirit only, what is the resultant ratio of spirit and water

1.  2 : 3

2.  1 : 4

3.  1 : 2

4.  3 : 4

5.  Cannot be determined

View Answer  
5
Correct Answer :

2 : 3


Explanation :
No Explanation available for this question

By mistake, instead of dividing Rs. 117 among three persons A, B and C in the ratio 1/2 1/3? 1/4 , it was divided in the ratio 2 : 3 : 4. Who gains the most and how much?

1.  A, Rs. 28

2.  B, Rs. 35

3.  C, Rs. 25

4.  C, Rs. 20

5.  C, Rs. 27

View Answer  
5
Correct Answer :

C, Rs. 25


Explanation :
No Explanation available for this question

How much water must be added to 28 L milk, costing Rs. 12 per litre, so that the value of the mixture will be Rs. 10.50 per litre

1.  3.6 L

2.  4.2 L

3.  3 L

4.  4 L

5.  5 L

View Answer  
5
Correct Answer :

4 L


Explanation :
No Explanation available for this question
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