In a school 4/7 of the students are boys. if there are 210 girls. find the number of boys in the school
Answers
Answered by
2
Answer:
Number of boys = 280
Step-by-step explanation:
Let Total number of students in a school = x
\begin{gathered}i) Number\: of \:boys = \frac{4}{7}\: of\: x\\=\frac{4x}{7}\end{gathered}
i)Numberofboys=
7
4
ofx
=
7
4x
ii) Number of girls = 210
\* given *\
\implies x-\frac{4x}{7}=210⟹x−
7
4x
=210
\implies \frac{7x-4x}{7}=210⟹
7
7x−4x
=210
\implies \frac{3x}{7}=210⟹
7
3x
=210
\implies x = \frac{210 \times 7}{3}⟹x=
3
210×7
\implies x =70 \times 7⟹x=70×7
\implies x = 490⟹x=490
Therefore,
Total number of students in a school = x = 490
Number of boys = x - number of girls
= 490 - 210
= 280
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Step-by-step explanation:
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Answered by
0
Answer:
the answer is 280 because boys =490-210 = 280
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