In a certain school, there are 320 students in the Junior Section, with a boy to girl ratio of 9:7. While there are 200 students in the senior section with a boy: girl ratio of 3:2. What is the boy : girl ratio for the school as a whole?
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Step-by-step explanation:
ratio of boy and girl in whole school
no. of boys in junior and seniorsection
no. of girl in junior and senior section
180+120
140+80
300
220
15
11
hence the ratio of boys to girl in whole school is 15:11
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