Question

The average weight of the group of boys and girls is 38 kg. The average
weight of the boys is 42 kg and that of the girls is 33 kg. If the number of boys
is 25, find the number of girls.​

Answer 1

Answer:

hope so it helps you dear

Answer 2

Answer:

⠀⠀⠀⌬ Group's Average weight = 38 kg

⠀⠀⠀⌬ Boy's Average weight = 42 kg

⠀⠀⠀⌬ Girl's Average weight = 33 kg

⠀⠀⠀⌬ Number of boys = 25

⠀⠀⠀⌬ Number of girls = ?

• According to the Question :

⇢ (Group - Girls) × Number = (Boys - Group) × Number

⇢ (38 - 33) × Number = (42 - 38) × 25

⇢ 5 × Number = 4 × 25

⇢ Number = (4 × 25) / 5

⇢ Number = 4 × 5

⇢ Number = 20

∴ Hence, Number of girls in group is 20.