Question
Difference between the number of females of tribe Raba
and Dimasa together is approximately what percent of the total population of tribe Dimasa? Answer the following questions based on the information given below: There are two tribes (Raba and Dimasa) in Mizoram. Total population of tribe Raba is 4800. Number of males of tribe Raba is 40% more than the number of females of tribe Raba. Total population of tribe Dimasa is 20% more than the population of tribe Raba. Ratio of number of males to the number of females of tribe Dimasa is 5:7.Solution
Let the number of females of tribe Raba be x. Number of males of tribe Raba = 1.4x Total population = 4800 => x + 1.4x = 4800 => x = 2000 Number of males of tribe Raba = 1.4 × 2000 = 2800 Number of females of tribe Raba = 2000 Total population of tribe Dimasa = 4800 × 1.2 = 5760 Number of males of tribe Dimasa = (5/12) × 5760 = 2400 Number of females of tribe Dimasa = (7/12) × 5760 = 3360 Required % = [(3360 – 2000)/5760] × 100 = 24% approx.
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