16 is 4% of
400 Change the percentage into a decimal by dividing the decimal over 100:
Divide 16 by the decimal (0.04):
If we use the surface of the water as our frame of reference, then Christy's vertical position could be represented by -12 ft.
(x+3)(x+3) = x^2 -3 + 3x
x^2 + 3x + 3x + 9 = x^2 + 3x - 3
x^2 + 6x + 9 = x^2 + 3x - 3
6x + 9 = 3x - 3
3x + 9 = -3
3x = -12
x = -4
Check:
(-4+3)^2 = (-4)^2 - 3(1+4)
(-1)^2 = 16 - 3(5)
1 = 16-15
1 = 1 :)
It would be: 32/48 = 16/24 = 8/12 = 4/6 = 2/3
[ Just try to divide numerator & denominator by 2, until they reach at the position, when they can't reduce anymore ]
In short, Your Answer would be 2/3
Hope this helps!