the ratio of male to female in a certain college is 3:2, when 50 more males and 80 more females join the college, the ratio of males to females become 5:4. find the original number of males in the college.
Attachments:
Answers
Answered by
5
let constant be x
3x:2x
3x+50\2x+80=5\4
(3x+50)×4=(2x+80)×5
12x+200=10x+400
12x-10x=400-200
2x=200
x=100
no of males are 3×100=300
no of females are 2×100=200
3x:2x
3x+50\2x+80=5\4
(3x+50)×4=(2x+80)×5
12x+200=10x+400
12x-10x=400-200
2x=200
x=100
no of males are 3×100=300
no of females are 2×100=200
Similar questions
Social Sciences,
8 months ago
Physics,
8 months ago