**(21) Two numbers are in the ratio of 3:4. If 5 is subtracted from each, then the ratio will be 2:3 what is the smallest number?**

(a) 23

(b) 17

(c) 15

(d) 10

**(22) The average age of 8 men is increased by 2 yr when two of them whose age are 21 and 23 yr are replaced by two new men. The average of the two new men is**

(a) 43

(b) 28

(c) 30

(d) 32

**(23) How much simple interest will Rs. 2000 earn in 18 months at an annual rate of 6%?**

(a) Rs. 180

(b) Rs. 150

(c) Rs. 200

(d) Rs. 170

**(24) Which of the following number is a prime?**

(a) 861

(b) 331

(c) 667

(d) 481

**(25) Rs. 5000 earned Rs. 300 interest in 2 yr. The rate of interest is**

(a) 5%

(b) 10%

(c) 4%

(d) 3%

**(26) What the seller marked the printed price of a watch purchased at Rs. 380, so that giving 5% discount there is 25% profit?**

(a) 600

(b) 400

(c) 550

(d) 720

**(27) The mess charges for 35 students for 24 days in Rs. 6300. In how many days will the mess charges be Rs. 3375 for 25 students?**

(a) 23

(b) 32

(c) 18

(d) 10

**(28) The wooden box measure 20 cm x 12 cm x 10 cm. Thickness of wood is 1 cm. The volume of wood to make the box (in cubic cm) is**

(a) 760

(b) 960

(c) 650

(d) 880

**(29) The monthly income of A and B are in the ratio 4:3 . Each of them** **saves Rs. 600. If the ratio of their expenditure is 3:2, then what is the monthly income of A?**

(a) Rs. 3400

(b) Rs, 1300

(c) Rs, 2000

(d) Rs. 2400

**(30) (6.5 x 6.5 – 45.5 + 3.5 x 3.5 ) is equal to**

(a) 10

(b) 4

(c) 9

(d) 7