In Mrs Jackson's class there are 18 girls out of 30 pupils. In Mrs Lenners class there are 12 girls in the class of 20. 1. What fraction of girls are there in each class? 2. Who has the bigger proportion of girls?

18/30

factor out 6

6*3/6*5

as factors you have the right to eliminate like factors top and bottom ( the 6)

3/5 girls in Mrs Jackson's class
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12/20

factor out 4

4*3/4*5

3/5 girls in Mrs Lenner's class
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Both classes are proportionately equal.