(iv) None of these (v) Data inadequate
4. The average marks obtained by 120 candidates in a certain examinations
35.if the average marks of passed candidate is 39 and that of the failed
candidates is 15,what is the number of candidates who passed the examination?
(i) 110
(ii) 115
(iii)120
(vi)100
(v) None of these
5. The average age of 8 persons in a committee is increased by 2 years when
two men aged 35 years and 45 years are substituted by two women.Find the
average age of these two women?
(i) 48
(ii) 36
(iii)42
(vi)29
(v) None of these
6.**.**In
a class, there are 20 boys whose average age is decreased by 2 months, when one
boy aged 18 years is replaced by a new boy.Find the age of new boy.
(i) 19 years
(ii) 14 years 6 month
(iii)15 years
(vi)14 years 8 month
(v) 12 years
7. One -third of certain
journey is covered at the rate of 25kmph,one-fourth at the rate of 30kmph and
the rest at 50 kmph. Find the average speed for the whole journey.
(i) 33.33 kmph
(ii) 36
(iii)42
(vi)27
(v) None of these
8. The average salary of the entire staff in a office is Rs 120 per
month.The average salary of officers is Rs 460 and of non officers is Rs 110.
If the number of officers is 15,then find the No of non-officers in the office.
(i) 480
(ii) 500
(iii)600
(vi)430
(v) 510
9. .There were 35 students in a hostel.If the number of students increased
by 7, the expenses of the mess increases by Rs. 42 per day,while the average
expenditure per head diminishes by Rs.1.Find the original expenditure of the
mess.
(i) 420
(ii )400
(iii)480
(vi)460
(v) None of these 10. The average weight of A,B,and C is 84 kg. If D joins the group, the
average weight of the group becomes 80 kg.If another man E who weights is 3 kg
more than D Replaces A, Then the average of B,C,Dand E becomes 79 kg. What is
the weight of A?
(i) 64
(ii) 72
(iii)75
(vi)100
(v )80 |

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