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25 August, 22:22

A social science book comprises of two sections:

geography and civics in the ratio 4:3. How much of each type of content will be needed to make a book of 490 pages? (If you could explain how to do this that would be great because I don't know how to do this type of problem.)

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  1. 26 August, 01:33
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    So you start by adding the two numbers on either side of your ratio together ...

    4 + 3 = 7

    Then you divide your total number (the book pages) by your total ratio number ...

    490/7 = 70

    Finally, you multiply each side by 70.

    4 x 70 = 280 geography

    3 x 70 = 210 civics

    Plus, you can check your answer by adding the two totals ...

    280 geography + 210 civics = 490 pages total
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