**(11) The LCM of two number is 495 and their HCF is 5. If the sum of the numbers is 100, then their difference is**

(a) 20

(b) 10

(c) 44

(d) 52

**(12) A man sells 32 mangoes at the cost price of 400 mangoes. Her gain % is**

(a) 25%

(b) 40%

(c) 8%

(d) 12%

**(13) The ratio of the volumes of two coins is 2 : 3 and the ratio of radii of their bases is 1 : 2 . The ratio of their heights is**

(a) 4:6

(b) 1:7

(c) 8:3

(d) 10:5

**(14) On selling an article for Rs. 651, there is a loss of 7%. The cost price of that article is**

(a) 750

(b) 789

(c) 700

(d) 765

**(15) The LCM and the HCF of the numbers 28 and 42 are in the ratio**

(a) 7:4

(b) 2:6

(c) 9:6

(d) 6:1

**(16) The ratio between the present ages of A and B is 4:5. If the ratio between their ages four years hence becomes 14:17. What is B’s age at present?**

(a) 30

(b) 43

(c) 28

(d) 35

**(17) If a man estimates his loss as 20% of the selling price , then liss % is**

(a) 40%

(b) 38/7 %

(c) 50/3 %

(d) 50%

**(18) At what rate percent per annum calculated in simple interest will a sum of money double in 10yr?**

(a) 14%

(b) 13.5%

(c) 20%

(d) 10%

**(19) How many bullets can be made out of a lead cylinder 56 cm high having a radius of 6 cm, each bullet being 1.5 cm in diameter?**

(a) 6500

(b) 3584

(c) 2654

(d) 6721

**(20) What is the number whose 20% is 30% of 40%**

(a) 40

(b) 60

(c) 44

(d) 76