Instructions

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

Question 160

What was the effective percentage increase in population of state ‘A’ from 1999 to 2001 ?

Solution

Let the population of State A in 1999 = $$100x$$

=> Population in 2000 = $$\frac{140}{100} \times 100x = 140x$$

Population in 2001 = $$\frac{145}{100} \times 140x = 203x$$

$$\therefore$$ Effective % increase = $$\frac{203x - 100x}{100x} \times 100$$

= $$\frac{103}{100} \times 100$$ = 103%

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