17. 25 % of the students in a class are boys and others are girls. Form a linear equation in two variables x and y for the given data and draw graph for this . Find number of girls if number of boys are 20 ( 5 marks )
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Answer:
no•of girls is 60
Step-by-step explanation:
% of girls is 100%-25%=75%
Let no•of boys be x
&no•of girls be y
but y=3*x
=3x. from given % data
butx=20. given
no•of girls=3x
=3*20
=60
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