Question
The ratio of the number of boys and girls in a college is 7 : 8. If the percentage iikcrease in the number of boys and girls be 20% and 10% respectively, what will be the new ratio ?
Answer: Option C
ORIGINALLY, LET THE NUMBER OF BOYS AND GIRLS IN THE COLLEGE BE 7X AND 8X RESPECTIVELY. THEIR INCREASED NUMBER IS (120% OF 7X) AND (110% OF 8X), I . E . ( 120/100 X 7X ) AND ( 110/100 X 8X ) I . E . 42X/5 AND 44X/5 REQUIRED RATIO = 42X/5 : 44X/5 = 21 : 22
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ORIGINALLY, LET THE NUMBER OF BOYS AND GIRLS IN THE COLLEGE BE 7X AND 8X RESPECTIVELY. THEIR INCREASED NUMBER IS (120% OF 7X) AND (110% OF 8X), I . E . ( 120/100 X 7X ) AND ( 110/100 X 8X ) I . E . 42X/5 AND 44X/5 REQUIRED RATIO = 42X/5 : 44X/5 = 21 : 22
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