Q21. If selling price of 10 articles is the same as cost price 12 articles, find the gain percentage.

• 15%
• 20%
• 25%
• 30%

Q22. The ratio between two numbers is 3:4. If their L.C.M is 600, then the numbers are:

• 130, 140
• 120, 160
• 60, 80
• 150, 200

Q23. A man sold two commodities for Rs.99 each. On one he gains 10% and the other he loses 10%. Find his gain or loss percent in the whole transaction.

• 10% loss
• 10% gain
• 1% loss
• 1% gain

Q24. A 150 metres long train takes 20 seconds to cross a 450 metres long platform. The speed of the train in kilometres per minute is

• 1.8
• 3.8
• 2.8
• 1.5

Q25. 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

Q26. 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

Q27. 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

Q28. 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

Q29. If 3a = 4b and 7b = 8c, find a:b:c ?

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

Q30. Successive discount of 10% and 10% are equivalent to a single discount of:

• 21%
• 20%
• 18%
• 19%