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There are 20 girls and 15 boys in a class.(a) What is the ratio of number of girls to the number of boys?(b) What is the ratio of number of girls to the total number of students in the class?

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girls=20
boys=15
total=35
a)ratio=girls/boys=20/15=4:3
b)ratio=girls/total=20/35=4:7.
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NCERT-RATIO AND PROPORTION-EXERCISE 12.1
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