Solve
Guides
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Standard VII
Mathematics
Question

Average weight of 8 boys is 57 kg ,if weight of seven of them are 64, 42, 29, 39, 80, 52 and 55 kgs, then weight of the eighth student is
  1. 75 kg
  2. 55 kg
  3. 65 kg
  4. 35 kg

A
75 kg
B
35 kg
C
65 kg
D
55 kg
Open in App
Solution
Verified by Toppr

Required weight
=57x8−(64+42+29+39+80+52+55)
=456−361=35kg

Was this answer helpful?
0
Similar Questions
Q1
Average weight of 8 boys is 57 kg ,if weight of seven of them are 64, 42, 29, 39, 80, 52 and 55 kgs, then weight of the eighth student is
View Solution
Q2
The mean weight of a group of seven boys is 56 kgs. The individual weights (in kg) of six of them are 52, 57, 55, 60, 59 and 55. Find the weight of the seventh boy. [4 MARKS]
View Solution
Q3
The mean weight of students in a group of seven is 55 kg. If the individual weights of 6 students are 52, 58, 55, 53, 56 and 54; then the weight of the seventh student is:
View Solution
Q4
The mean weight of 5 boys is 50 kg. The individual weights of four of them are 40kg, 43kg, 50kg and 65kg. Find the weight of the fifth boy.
View Solution
Q5

There are 29 students in a class whose average weight is 36 kgs. Among these 29 students, 16 are boys and 13 are girls. The average weight of 16 boys is 6.75 kgs more than the average weight of 13 girls. What is the average weight of girls (in kg)?


View Solution