SOLUTION: In a school of 1620 pupils the ratio of boys to girls is 4:5 How many girls in the school? Teaching a 10 year old so easy as possible solution Thank you

Question 712163:
In a school of 1620 pupils the ratio of boys to girls is 4:5
How many girls in the school?
Teaching a 10 year old so easy as possible solution
Thank you
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
4+5=9 WHICH REPRESENTS ONE GROUP OF STUDENTS.
1620/9=180 TOTAL GROUPS OF STUDENTS
THERE ARE 4 BOYS IN EACH GROUP.
4*180=720 TOTAL BOYS.
THERE ARE 5 GIRLS IN EACH GROUP.
5*180=900 TOTAL GIRLS.
PROOF:
720+900=1620
1620=1620
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HOPE THIS IS AN ADEQUATE SOLUTION METHOD.
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