Find out the average marks of the girls in the class if the average of class is 50 marks and average marks of boys is 60. The ratio of boys to gir...

Body

Find out the average marks of the girls in the class if the average of class is 50 marks and average marks of boys is 60. The ratio of boys to girls is 3:2.

a 38

b 35

c 45

d 40

1 Replies

  • Replied 1 year ago

    Report

    Let the number of boys and girls in the class are 3x and 2x respectively
    Marks of boys = 60*3x = 180x
    Marks of the class = 50*5x = 250x
    Marks of the girls = 70x
    Average marks of girls is = 70x/2x = 35

Ratios ยท CATKing Forum

Find out the average marks of the girls in the class if the average of class is 50 marks and average marks of boys is 60. The ratio of boys to gir...

Body

Find out the average marks of the girls in the class if the average of class is 50 marks and average marks of boys is 60. The ratio of boys to girls is 3:2.

a 38

b 35

c 45

d 40

1 Replies

  • Replied 1 year ago

    Report

    Let the number of boys and girls in the class are 3x and 2x respectively
    Marks of boys = 60*3x = 180x
    Marks of the class = 50*5x = 250x
    Marks of the girls = 70x
    Average marks of girls is = 70x/2x = 35