There are 50 students in a class of which 40 are boys and the rest are girls
the average weight of the class is 44kg and the averageweight of the girls us 40kg.
find the average wieght of the boys
Average weight is the total weight divided by the number of people.
To find the average weight of boys, we first look for the total weight of all (boys + girls), and the total weight of the girls.
Weight of all (boys + girls):
44 * 50 = 2200 kg
Weight of girls:
40 * (50 - 40)
40 * 10 = 400 kg
The total number of girls is 50-40 because it's stated that there are 50 students in a class of which 40 are boys and the rest are girls.
To get the total weight of boys, we subtract the weight of all by the weight of girls:
2200 - 400 = 1800 kg
Since there are 40 boys, the average weight of boys is:
1800 / 40 = 45 kg
hope this helps~ `u`
yes
Thick hai
To find the average weight of the boys in the class, we need to use the concept of weighted average.
Step 1: Calculate the total weight of the class.
Since the average weight of the class is given as 44kg, we can assume that the total weight of all the students in the class is:
Total weight of class = Average weight of class × Number of students in the class
Total weight of class = 44 kg × 50 students
Total weight of class = 2200 kg
Step 2: Calculate the total weight of the girls.
Since we know that the average weight of the girls is 40kg, we can assume that the total weight of all the girls in the class is:
Total weight of girls = Average weight of girls × Number of girls in the class
Total weight of girls = 40 kg × (Total number of students in the class - Number of boys in the class)
Total weight of girls = 40 kg × (50 students - 40 boys)
Total weight of girls = 40 kg × 10 girls
Total weight of girls = 400 kg
Step 3: Calculate the total weight of the boys.
Since we have the total weight of the class and the total weight of the girls, we can subtract the total weight of the girls from the total weight of the class to find the total weight of the boys:
Total weight of boys = Total weight of class - Total weight of girls
Total weight of boys = 2200 kg - 400 kg
Total weight of boys = 1800 kg
Step 4: Calculate the average weight of the boys.
To find the average weight of the boys, we divide the total weight of the boys by the number of boys in the class:
Average weight of boys = Total weight of boys / Number of boys in the class
Average weight of boys = 1800 kg / 40 boys
Average weight of boys = 45 kg
Therefore, the average weight of the boys in the class is 45kg.