Subject
Quantitative Aptitude
Topic
Ratio
The ratio of the number of boys and girls in a college is 7 : If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
The ratio of the number of boys and girls in a college is 7 : If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
ক)
8:9খ)
17:18গ)
21:22ঘ)
Cannot be determinedExplanation
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). => ((120/100)x7x) and ((110/100) x 8x) => 42x/5 and 44x/5 So, The required ratio = 42x/5 : 44x = 21 : 22.Related questions
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