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there are 140 student in a class and 2 upon 7 of the student are boys how many girls are there in a class​

Answer :

Sedifyg

Answer:

100

EXPL.

since 2 out of 7 are boys, that means 140/7 are pairs of 7 students in class, i.e. 20 pairs of students.

In each pair, 2 are boys and (7-2=5) are girls, therefore, no. of girls=5x20=100 girls.

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