How is multiplying 0.3 by 10 like multiplying 0.3 by 0.01? how is it different?
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Let's say a stands for apples and p for pears
We know that
And
In order to know what the cost of an "a" is we have to put the value of the p in the second equation, which means
And
The price of per kilo for apples is 1.80
We know that
And
In order to know what the cost of an "a" is we have to put the value of the p in the second equation, which means
And
The price of per kilo for apples is 1.80