Question

in a class 3/5 of 45 students are boys find the number of girls

Answer 1

Solution:

Solution:            3x+2x=45

Solution:            3x+2x=45            5x=45

Solution:            3x+2x=45            5x=45            x=9

Solution:            3x+2x=45            5x=45            x=9     ∴ Boys:girls  in ratio 27:18

Solution:            3x+2x=45            5x=45            x=9     ∴ Boys:girls  in ratio 27:18      Number of girls in class is 18

Solution:            3x+2x=45            5x=45            x=9     ∴ Boys:girls  in ratio 27:18      Number of girls in class is 18      Number of boys in class is 27

Solution:            3x+2x=45            5x=45            x=9     ∴ Boys:girls  in ratio 27:18      Number of girls in class is 18      Number of boys in class is 27      Ratio of boys to total students is 27:45that is 3:5

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Answer 2

number of girls is 18

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