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Question

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.

Difference between the number of females of tribe Raba and Dimasa together is approximately what percent of the total population of tribe Dimasa?

A 44% Correct Answer Incorrect Answer
B 57% Correct Answer Incorrect Answer
C 35% Correct Answer Incorrect Answer
D 15% Correct Answer Incorrect Answer
E 24% Correct Answer Incorrect Answer

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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