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Project Help Please - Calculations in Soil Science

  • 13-01-2017 8:34pm
    #1
    XxXSarahXxX
    Registered Users Posts: 34 ✭


    Hey,

    I am to complete a project that involves doing an experiment
    'to determine the impact of each additive, the effects on samples of a
    garden soil of adding 20% by mass of (a) sand, (b) potting compost, and (c) clay on the rate of drainage of soil'.

    My question is:
    does one add the additive that would equates to 20% of the mass of the garden soil i.e. adding 20g of sand to 100g of garden soil
    or
    does remove 20% of the garden soil and replace it with the additive i.e. 20g of sand mixed with 80g of garden soil.


    Thanks in advance for any help! :)
    Tagged:


Comments

  • #2
    CramCycle
    Moderators, Sports Moderators Posts: 24,419 Mod ✭✭✭✭CramCycle


    While poorly phrase it sounds like the first option. That is your total mass as a percentage of your original would be 120%


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