Instructions

Study the following graph carefully to answer these questions.
Per cent rise in population of two states from the previous year

Question 156

If the ratio between the population of states A & B in year 2000 was 3 : 4 respectively, what was the respective ratio in 2001 ?

Solution

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Let the population of State A in 2000 = $$300x$$

Population of State B in 2000 = $$400x$$

=> Population of State A in 2001 = $$\frac{145}{100} \times 300x = 435x$$

Population of State B in 2001 = $$\frac{135}{100} \times 400x = 540x$$

$$\therefore$$ Required ratio = $$\frac{435x}{540x}$$

= 29 : 36

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