# Quiz Discussion

There are two sections A and B of a class, consisting of 36 and 44 students' respectively. If the average weight of section A is 40kg and that of section B is 35kg, find the average weight of the whole class.

Course Name: Quantitative Aptitude

• 1] 30 kg
• 2] 35 kg
• 3] 42.5 kg
• 4] 37.25 kg
##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs. 90 per day. During the first 7 days, his average wages was Rs. 87/day and the average wages during the last 7 days was Rs. 92/day. What was his wage on the 8th day?

• 1] 93
• 2] 90
• 3] 92
• 4] 97
##### Solution
2
Discuss

The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 and of girls is 40 kg. Therefore, the number of boys is:

• 1] 50
• 2] 60
• 3] 70
• 4] 65
##### Solution
3
Discuss

The average salary of all the workers in a workshop is Rs.8000. The average salary of 7 technicians is Rs.12000 and the average salary of the rest is Rs.6000. The total number of workers in the workshop is

• 1]

20

• 2]

21

• 3]

22

• 4]

23

##### Solution
4
Discuss

The average age of a class is 15.8 years. The average age of the boys in the class is 16.4 years while that of the girls is 15.4 years. What is the ratio of boys to girls in the class?

• 1]

1:2

• 2]

2:3

• 3]

3:4

• 4]

3:5

##### Solution
5
Discuss

The average age of a family with 5 members is 28. If one of the 5 members of age 20 is excluded the average age of the family becomes -

• 1] 25
• 2] 20
• 3] 30
• 4] 24
##### Solution
6
Discuss

The average temperature for Wednesday, Thursday and Friday was 40°C. The average for Thursday, Friday and Saturday was 41° C. If temperature on Saturday was 42° C, what was the temperature on Wednesday?

• 1] 39° C
• 2] 44° C
• 3] 38° C
• 4] 41° C
##### Solution
7
Discuss

The average age of P, Q and R is 15 years more than R's age. If the total age of P and Q together is 39 years, then R's age is ?

• 1] 12 years
• 2] 24 years
• 3] 16 years
• 4] 14 years
##### Solution
8
Discuss

If the mean of a,b,c is M and ab+bc+ca=0, then the mean of a2,b2,c2 is:

• 1]

M2

• 2]

3M2

• 3]

6M2

• 4]

9M2

##### Solution
9
Discuss

The average weight of 47 balls is 4 g. if the weight of the bag (in which the balls are kept) be included; the calculated average weight per ball increases by 0.3 g. What is the weight of the bag?

• 1] 14.8 g
• 2] 14.4 g
• 3] 15 g
• 4] 18.6 g
• 5] None of these
##### Solution
10
Discuss

The average of the first five multiples of 9 is:

• 1] 20
• 2] 27
• 3] 28
• 4] 30
# Quiz