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Percentage       Question No. 1

Question: 10% of inhabitants of a village having died of cholera, a panic set in, during which 25% of the remaining inhabitants let the village. The population is then reduced to 4050. Find the original inhabitants
5500
6000
6500
7000

Explanation:

Correct Answer: B

Let the total number is x, then

(100 - 25)% of (100 - 10)% x = 4050

75% of 90% of x = 4050

75 100 × 90 100 × x = 4050

3 4 × 9 10 × x = 4050

x = 4050 × 4 × 10 3 × 9

x = 4050 × 40 27 = 6000