For each orange plant , 0.3 kilo = 300 grams of fertiliser is used
An equation is a mathematical statement formed wen two algebraic expression are equated using an equal sign.
Let the fertiliser used in orange plants be x
The total fertiliser used is 8x
the fertiliser used in orange plants is 4-1.6 = 2.4 kilo
For each orange plant , the equation formed is
8x = 2.4
x = 0.3 kilo
Therefore each orange plant , 0.3 kilo = 300 grams of fertiliser is used
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