# Acid and water are mixed in a vessel A in the ratio of 5 : 2 and in the vessel B in the ratio 8 : 5. In what proportion: should quantities be taken out from the two vessels so as to form a mixture in which the acid and water will be in the ratio of 9 : 4

1.  7: 2

2.  2: 7

3.  7: 4

4.  2:3

4

2: 7

Explanation :
No Explanation available for this question

# A tabulator while calculating the average marks of 100 students of an examination, by mistake enters 68, instead of 86 and obtained the average as 58; the actual average marks of those students is

1.  58.18

2.  57.82

3.  58.81

4.  57.28

4

58.18

Explanation :
No Explanation available for this question

# A shopman bought pens at the rate of 7 for Rs. 10 and sold them at a profit of 40%. How many pens would a customer get for Rs. 10

1.  6

2.  4

3.  5

4.  3

4

5

Explanation :
No Explanation available for this question

# Three persons A, B, C whose salaries together amount to Rs. 72000 spend 80, 85 and 75 percent of their salaries respectivally. If their savings are in the ratio 8:9: 20, then A’s salary is

1.  Rs. 20,000

2.  Rs. 16,000

3.  Rs. 22,000

4.  Rs. 18,000

4

Rs. 16,000

Explanation :
No Explanation available for this question

# Two solutions of 90% and 97% purity are mixed, resulting ir 21 litres of mixture of 94 %purity. The quantity of the sec ond solution in the resulting mixture, in litres, is

1.  15

2.  12

3.  9

4.  6

4

12

Explanation :
No Explanation available for this question

# A boat travels 24 km upstrearr in 6 hours and 20 km down stream in 4 hours. Then the speed of boat in still water anc the speed of water current are respectively

1.  4 kmph and 3 kmph

2.  4.5 kmph and 0.5 kmph

3.  4 kmph and 2 kmph

4.  5 kmph and 2 kmph

4

4.5 kmph and 0.5 kmph

Explanation :
No Explanation available for this question

# If the difference between sim pie interest and compound in , ;: terest on a certain sum of rrion : ey for 3 years at 10% per a.n num is Rs. 31, the sum is ;

1.  Rs. 500

2.  Rs. 750

3.  Rs. 1000

4.  Rs. 1250

4

Rs. 1000

Explanation :
No Explanation available for this question

# What is the difference in proi it between 1983 and 1984 (ii lakhs of rupees)

1.  No profit

2.  5

3.  10

4.  15

4

10

Explanation :
No Explanation available for this question

# the number of years in which the income is more than the average income of the given years is

1.  One

2.  Two

3.  Three

4.  Four

4

Three

Explanation :
No Explanation available for this question

1.  24 : 133

2.  48 : 17

3.  12 : 7

4.  6 : 5

4