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The ratio of the number of girls to the number of boys in a college having 1440 students is 5:3. If 36 newgirls and some new boys are admitted to the college, the ratio of the number of girls to the number of boyschanges to 3 : 2. Find the number of new boys admitted to the college. |
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Answer» Answer: no. of new boys = 84 Step-by-step explanation: let the ratio of girls to boys = 5x:3x ∴5x+3x=1440 ∴8x=1440 ∴x=1440/8 =180 ∴old No. of girls = 5x =5(180) =900 ∴old No. of boys = 3x =3(180) =540 no. of new girls = 36 ∴ New no. of girls = 900+36 =936 now, let the new ratio of girls to boys be 3y:2y ∴3y=936 ∴y=936/3 =312 ∴New no. of boys =2y =2(312) =624 ∴no. of new boys = New no. of boys - old no. of boys = 624-540 = 84 PLEASE MARK THIS ANSWER AS BRAINLIEST IF YOU THINK IT IS WORTH IT✌ |
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