The number of boys in a class is 12. The total number of students in classis twice the number of boys plus 7. Take the number of girls in the class
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(12Ć2)+7
(24)+7
total students=31
number of boys=12
number of girls=31-12
=19
(24)+7
total students=31
number of boys=12
number of girls=31-12
=19
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