maths

$90%$ of $x=315km$

$⇒10090 ×x=315$

$⇒x=90315×100 $

$⇒x=350km$

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i) Find the population in $2001$.

ii) What would be its population in $2005$

iii) Write any two effects of high populations

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Largest Deserts in the World | |

Desert | Area (km2) |

Sahara (Africa) | 8,800,000 |

Gobi (Asia) | 1,300,000 |

Australian Desert (Australia) | 1,250,000 |

Arabian Desert (Asia) | 850,000 |

Kalahari Desert (Africa) | 580,000 |

Chihuahuan Desert (North America) | 370,000 |

Takla Makan Desert (Asia) | 320,000 |

Kara Kum (Asia) | 310,000 |

Namib Desert (Africa) | 310,000 |

Thar Desert (Asia) | 260,000 |

(a) What are the mean, median and mode of the areas listed ?

(b) How many times the size of the Gobi Desert is the Namib Desert ?

(c) What Percentage of the deserts listed are in Asia ?

(d) What percentage of the total area of the deserts listed is in Asia ?

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i) He earned $15%$ more in $2009$. Calculate how much he earned in $2009$.

ii) In $2010$ he earns $10%$ more than in $2009$. Calculate the percentage increase in his earnings from $2008$ to $2010$

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