Q51. 1/3 of Samir's money is equal to 1/2 of Rahul's money. If both of them together have Rs.500, what is the difference between their amounts?

• Rs. 120
• Rs. 200
• Rs. 100
• Rs. 300

Q52. In how many years, a sum will be double of it at the rate of 10% per annum?

• 10 years
• 20 years
• 15 years
• 12 years

Q53. If A's salary is 15% more than that of B, then how many percent is B's salary less than that of A?

• 10*2/2
• 13*1/23
• 15*2/3
• 12*1/23

Q54. The ration between two numbers is 3:4. If each number is increased by 6, the ratio becomes 4:5. The difference between the numbers is:

• 6
• 7
• 1
• 8

Q55. If 3a = 4b and 7b = 8c, find a:b:c ?

• 3 : 4 : 8
• 3 : 7 : 8
• 32 : 24 : 21
• 36 : 63 : 56

Q56. Successive discount of 10% and 10% are equivalent to a single discount of:

• 21%
• 20%
• 18%
• 19%

Q57. Two numbers are in the ratio 2:9. If 10 be added to each, they are in the ratio of 3:10. The numbers are

• 20 and 90
• 2 and 9
• 6 and 27
• 8 and 36

Q58. The average of first 10 natural numbers is :

• 4.5
• 5
• 5.5
• 6

Q59. 3 litres of water is added to 15 litres of alcohol-water solution containing 40% alcohol strength. The strength of alcohol in new solution will be:

• 30%
• 33*1/3
• 33*2/3
• 33%

Q60. A bag containing only blue, red and green marbles. All but 15 are blue, all but 13 red and all but 22 are green. How many green marbles are there?

• 8
• 12
• 3
• 10