(1) If the price of petrol is raised by 12.5% then find by what percent should a consumer decrease the consumption of petrol so that there is no change in his monthly expenditure on petrol.

(a)16%

(b)112⁄7%

(c )111⁄9%

(d)20%

(e)None

Sol:-C

(2) A’s salary is 30% more than B . B’s salary is 40% of C’s salary. If the total salary of A,B & C together is Rs. 7680, what is A’s salary?

(a)4000

(b)1600

(c )2400

(d)2080

(e)None

Sol:-D

(3) Mohan spent 25% of his monthly salary on household, which is 40% of Nitin’s monthly salary. Nitin spent 30% salary on children education which is 40% of Yogesh’s monthly salary i.e. Rs 3.000.what is Mohan’s monthly salary?

a)4800

(b)3200

(c )6400

(d)6500 (e)None

Sol:-C

(4) In an examination of “n” question a student replied 15 out of the first 20 questions correctly. Of the remaining questions, he answered 1⁄3 correctly. All the questions have the same credit.If the student get 50% marks, the value of “n” is

(a)20

(b)40

(c )50

(d)100

(e)None

Sol:-C

(5) A student who secured 20% marks in an examination failed by 30 marks. Another student who secured 32% marks got 42 marks more than those required to pass. The perecentage of marks required to pass is.

(a)30

(b)28

(c )20

(d)25

(e)None

Sol:-D

(6) The prices registered an increase of 10% on food grains and 15% on other item of expenditure.If the ratio of an employee expenditure on food grains and other items be 2:5 by how much should his salary be increased in order that he may maintain same level of consumption as before if his present salary is Rs, 2,590/-? (His expenditure = his salary)

(a)350

(b)500

(c )400

(d)370.50

(e)None

Sol:-E

(7) For a sphere of radius 10 cm, the numerical value of surface area is what % of the numerical value of its volume?

(a) 24%

(b) 26.5%

(c ) 30%

(d) 45%

(e)50%

Sol:-C