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Question 4

Using the data in Table 1, calculate the mean annual sediment runoff of the selected Asian river basins.

Show your working. Give your answer to one decimal place.

Table 1: Annual sediment runoff of selected Asian river basins

River BasinAnnual sediment runoff (millions of tonnes)
Ganges480.2
Yellow River390.5
Yangtze240.4
Indus110.8
Brahmaputra320.0
Mekong160.3
Irrawaddy210.4
Pearl River65.4
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Numerical skills Questions

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