Question

37. Due to migration to cities, the population of a
village decreases at the rate of 4% per annum. If
its present population is 5760, what was it 2 years
ago?
(a) Rs. 5,250
(c) Rs. 6,250
(b) Rs. 4.000
(d) Rs. 6.200

Answer correctly
With explanation​

Answer 1

Answer:

Step-by-step explanation:

Total number of people left = 5760

Therefore, Amount = 5760

Rate of decrease of population = 4% p.a.

Let the population 2 years back be x.

(4x × 2)/100 =  x + 5760

8x/100 = x + 5760

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Answer 2

Answer:

present population =5760

rate decreases =4%

time=2years

population of two year ago decrease =5760=X×(1-4/100)*2

5760=X(1-1/25)*2

5760=X(24/25)*2

5760=X×576/625

5760×625/576=X

X=10×625

X=6250