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6.In class of 40 pupils the number of girls is three-fifths of the number of boys. Eind thenumber of boys in the class. |
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Answer» Thank you for asking the question!There is a class with 40 pupils, three fifth are the girls. so the number of boys will be calculated as follows.Suppose Total pupils= 40 Number of girls= 3\5 Number of boys= ?According to a equation: y + 3 y\5 = 40 8 y\5 = 40 = 40*5\8 = 25Hence the total number of boys are 25.Hope it helps. Let the number of boys in the class be x. ∴The number of girls in the class =3x/5 The total number of pupils in the class = 40. According to the given condition, 3x/5+x=40 ⇒3x + 5x = 200 (Multiplying throughout by 5) 8x = 200 ⇒x =200/8 (Transposing 8 to RHS) x = 25 ∴The number of boys in the class is 25. Total pupils= 40 Number of girls= 3\5 Number of boys= ? According to a equation: y + 3 y\5 = 40 8 y\5 = 40 y = 40*5\8 = 25 Hence the total number of boys are 25. 25 is the correct answer 😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘😘 no of the boys = 25 is the best answer. 16 is right answer of this question |
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