When 40% of the girls left the school assembly, the ration of the number of boys to girls became 3 t0 4 . If there were w girls when the assembly started, what was the total number of boys and girls when the assembly started? (Giving out brainliest for best answer!)

21/20

Step-by-step explanation: hope this helps you plz mark as brainest

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the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below: