1. If 3:27:: 5:?

2. Divide 13,680 in three parts such that 1st part is 3/5th of the third part and the ratio between 2nd and 3rd part is 4:7. How much is the first part?

3. The ratio between the weights of gold and silver in an alloy is 17:3. If the weight of silver in the alloy is 2.7gm, find the weight of gold in the alloy?

4. Ram is 4 times his son's age today. Five years hence, Ram will be thrice his son's age. Find their current ages?

5. If 3A = 2B = C, then A:B:C = ?

6. Two-thirds of children are in the age group 1-12 years. Of this, if three-fourths are in the age group of 1-8 years find the fraction of children in the age group of 9-12 years?

7. If the sum of digits is 9 and the difference between the digit in the ten's place and unit's place is 1, then the two-digit number is?

8. A's height is 5/8th of B's height. What is the ratio of B's height to A's height?

9. If 4x + 5y = 14 and x - 5y = 16 then the value of x and y are

10. The cash difference between the selling price of an article at a profit of 2% and 14% is Rs.3. The ratio of two selling prices

11. Karan purchased one dozen pens for Rs. 120/- and sold a pack of 3 pens for Rs. 35/- each. What is his gain?

12. Divide Rs. 288 in the ratio 2:3:5:6. The rupees in the respective ratios are given by:

13. Naveen purchased a gas cylinder and a stove for Rs4500.He sold the gas cylinder at a gain of 25% and the stove at a loss of 20%, still gaining 4% on the whole. Find the cost of the gas cylinder.

14. Anil can do a piece of work in 14 days which Rohit can do in 21 days. They worked together for few days after which Anil left. If Rohit worked alone for 3 days, find the total number of days it took to complete the whole work.

15. Two vessels contain milk and water in the ratio 2:3 and 7:3 find the ratio in which the the contents of the two vessels have to be mixed so that the ratio of milk and water in the new mixture is equal.

16. If a=2b/3 ,b=2c/3, and c=2d/3, then find the ratio of b and d:

17. 3 years ago, the ratio of Maya's and Shikha's age was 5:9 respectively. After 5 years, this ratio would become 3:5. Find present age of Maya?

18. In a mixture 25 litres, the ratio of milk and water is 4:1. How many litres of milk must be added to make the ratio 16:1?

19. Divide Rs.156 in the ratio 1:2:4:5. The rupees in the respective ratios are given by:

20. What is the 4th proportional of 3, 8, 12, ?

21. A person carries Rs. 165/- in the form of currency notes of denominations Rs. 5, Rs. 10 & Rs. 20 in the ratio of 3:2:1. What is the value of currency notes of Rs. 20 denomination?

22. Twice the difference between two numbers is equal to their sum. If one number is 15, find the other number.

23. Surya is 25 years older than his son. In 5 years, he will be twice as old as his son. What will be Surya's age after 3 years?

24. If three numbers are in the ratio 2:3:5 and the twice their sum is 100. Find the square of the largest of the three numbers.

25. Divide 3740 in three parts in such a way that half of the first part, one-third of the second part and onesixth of the third part are equal.

26. There are 90 coins, comprising of 5 and 10 paisa coins. The value of all the coins is Rs. 7. How many 5 paisa coins are there?

27. The ratio of ages of Jai and Joy is 5:2. The sum of their ages is 63 After 9 years What will be the ratio of their age?

28. The ratio of kids who like only Mars to those who like all the three is

29. The ratio of marks obtained by a student in 3 subjects was 1:2:3. The school decided to allow grace marks of 5% for each subject. Find the student's new ratio.

30. If x + y = 19 and x-y=7, then xy =?

31. The difference between the ages of two sisters is 4 years when father's age is 54. Father is elder by 2 years to mother. Younger sister's age is half of mother's age. Find the age of elder sister.

32. Find the 4th proportional to 9, 17 and 27.

33. Divide Rs.156 in the ratio 1:2:4:5. The rupees in the respective ratios are given by:

34. There are 90 coins, comprising of 5 and 10 paisa coins. The value of all the coins is Rs. 7. How many 5 paisa coins are there?

35. Six years ago, the ratio of the ages of the two persons P and Q was 3:2. Four years hence the ratio of their ages will be 8:7. What is P's age?

36. Divide 3740 in three parts in such a way that half of the first part, one-third of the second part and onesixth of the third part are equal.

37. The sum of digits of a two-digit number is 9. When the digits are reversed, the number decreases by 45. Find the changed number.

38. The sum of the ages of 4 children born at the intervals of 4 years is 48. Find the age of the youngest child.

39. The ratio of two numbers is 3:1 and their sum is 72. Find the difference between the numbers.

40. If a + 2b = 55 and a - 2b = -13, find the value of b.

41. Find the fourth proportional to 3.6,6.9 and 11.4.

42. If x + 2y = 27 and x - 2y=-1, find the value of y.

43. The difference between the ages of mother and son was 21 when mother's age was 43. If father is elder by 3 years to mother, what will be the difference between the ages of son and father when father attains 50 years?

44. The product of the ages of Swati and Aparna is 120. If thrice the age of Aparna is more than Swati's age by 2 years, find the age of Swati.

45. Two numbers are in the ratio 5:6. When 6 is added to each, the ratio becomes 7:8 then the numbers are