The ratio of the number of boys to the number of girls in a class was 2:3 at first . After 4 girls left the class the ratio becomes 4:5. How many boys were there in the class
Answers
Answered by
3
Step-by-step explanation:
HOPE THIS WILL HELP YOU...
PLEASE MARK AS BRAINLIEST
Attachments:
Answered by
2
boys/girls=2/3
thus,
boys=2/3girls... 1.
boys/girls-4=4/5
thus,
boys= 4girls-16/5.. 2.
therefore, 2girls/3=4girls-16/5
10girls=12girls-48.
thus,
2girls=48
girls=24...
thus,
boys=2girls/3= 2×24/3
16 boys...
Similar questions