In a school there are 600 students and the ratio of the boys and girls was 13:9 After some - Maths - Comparing Quantities

Question

In a school there are 600 students and the ratio of the boys and
girls was 13:9 After some time 30 girls joined
th​​​e school but few boys had left the school,
as a result the ratioof the boys and girls became 6:5 Find how many
boys had left the school

Ankita Agarwal · Accepted Answer

Dear Student,

Total Student=600Boys:girls=13:9So, total boys=1322×600                         =345
5~355       Number of people never be in decimalstotal girls=922×600               =245
4~245Now 30 more girls joined , so total girls=245+30=275and let x  boys left the school, so total boys=355-xNew ratio of boys and girls is355-x275=655×355-x=6×2751775-5x=16505x=125x=25 Hence 25 boys left the school

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In a school there are 600 students and the ratio of the boys and girls was 13:9. After some time 30 girls joined th​​​e school but few boys had left the school, as a result the ratioof the boys and girls became 6:5. Find how many boys had left the school.

In a school there are 600 students and the ratio of the boys and girls was 13:9. After some time 30 girls joined the school but few boys had left the school, as a result the ratioof the boys and girls became 6:5. Find how many boys had left the school.