Question

1. The mean marks (out of 100) of boys and girls in an examination are 70 and 73, respectively. If the
mean marks of all the students in that examination is 71, find the ratio of the number of boys to the
number of girls.​

Answer 1

Answer:

2:1

Step-by-step explanation:

let the number of boys be x and number of girls be y

now 70x+73y/x+y=71 (by average and we are taking x+y because they are total number of children)

from here x:y=2:1

Answer 2

Answer:

hope this helps you :)

Step-by-step explanation: