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DAD FAST TEST-MATHS-AVERAGE 001
There will be 10 question in each test. Each question comprises 1 point.
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1.
The average marks of 32 boys of section A of class X is 60 whereas the average marks of 40 boys of section B of class X is 33. The average marks for both the sections combined together is
1 point
B. 45
D. 45.5
C. 46.5
A. 44
Clear selection
2.
A fruit seller sold big, medium and small sized apples for Rs. 15, Rs. 10, and Rs. 5, respectively. The total number of apples sold were in the ratio 3 : 2 : 5. Find the average cost of an apple.
1 point
A. 8
B. 10
C. 9
D. 7
Clear selection
3.
The average weight of 15 students in a class increases by 1.5kg when one of the students weighing 40 kg is replaced by a new student. What is the weight (in kg) of the new student?
1 point
A. 64.5 kg.
B. 56 kg.
C. 60 kg.
D. 62.5 kg.
Clear selection
4. The average weight of the 8 oarsmen in boat is increased by 11/2 kg when one of the crew who weighs 60 kg is replaced by a new man. The weight of the new man (in kg.) is:
1 point
A. 70 kg
B. 68 kg
C. 71 kg
D. 72 kg
Clear selection
5.
Average age of 8 men is increased by 3 years when two of them whose age are 30 and 34 years are replaced by 2 persons. What is the average age of the 2 persons?
1 point
A. 24 years
B. 32 years
C. 44 years
D. 48 years
Clear selection
6.
The average weight of 15 oarsmen In a boat is increased by 1.6 kg when one of the crew, who weighs 42 kg is replaced by a new man. Find the weight of the new man (in kg):
1 point
A. 65
B. 66
C. 43
D. 67
Clear selection
7.
In a class, there are 40 boys and their average age is 16 years. One boy, aged 17 years, leaving the class and another joining, the average age becomes 15,875 years. The age of the new boys is
1 point
A. 12 years
B. 14.5 years
C. 15 years
D. 17 years
Clear selection
8.
The average age of 8 persons is increased by 2 years, when one of them, whose age is 24 years is replaced by a new person. The age of the new person is :
1 point
A. 42 years
B. 40 years
C. 38 years
D. 45 years
Clear selection
9.
The average weight of 12 parcels is 1.8 kg. Addition of another new parcel reduces the average weight by 50 g. What is the weight of the new parcel?
1 point
A. 1.50 kg.
B. 1.10 kg.
C. 1.15 kg.
D. 1.01 kg.
Clear selection
10.
If the average weight of 6 students is 50 kg. If two student of average age of 51 kg added and other students of average age of 55 kg also added then the average weight of all students is :
1 point
A. 61 kg
B. 51.5 kg
C. 52 kg
D. 51.2 kg
Clear selection
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