Question

Class 7 NCERT Math ch 8​

Answer 1

Answer is in the attachment

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Answer 2

$\rightarrow \sf \pink{\underline{ \underline{ \green{Given}}}}$

$\sf \: Inital \: population \: = \: 25,000$

$\sf \: Final \: \: population = 24500$

$\rightarrow \sf \pink{\underline{ \underline{ \green{To \: \: Find : }}}}$

$\sf \: Population \: Decrease \: Percentage$

$\rightarrow \sf \pink{\underline{ \underline{ \green{Solution: }}}}$

$\sf \: Decrease \: in \: population = 25000 - 24500 \\ \sf \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 500$

$\sf \: Decrease \: Percentage = \frac{500}{25000} \times 100$

$\sf \: Population \: Decrease \: Percentage = 2\%$

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