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There are 40Student in a class. If the number of boys is 4less than the number of girls.find the number of boys.​

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Answer:

18

Explanation:

Let number of girls be 'x'.

So, Number of boys = Number of girls - 4

= x - 4

Total number of students in a class = 40

Number of girls + Number of boys = Total number of students in a class


\longrightarrow x + x - 4 = 40


\longrightarrow 2x - 4 = 40


\longrightarrow 2x - 4 + 4 = 40 + 4


\longrightarrow 2x = 44


\longrightarrow
\sf (2x)/(2) = (44)/(2)


\longrightarrow x = 22


\therefore Number of boys = 22 - 4

= 18

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