Find the probability of landing on green in one spin. Generic rectangle top and left sides, each labeled, green, x, & purple. Interior top left labeled, 0.16.

$x =$ the probability of landing on green in one spin.
P(green and green) $= x · x = 0.16$

$x^2 = 0.16$

$x = 0.4$

The probabilities of all possible outcomes need to add up to $1$ or $100%$%. If $x$ is $0.4$, what would $y$ be? Added to the rectangle, the label, y, underneath the purple label on top & left sides.  

Use the value of $y^{^{ }2}$ to help you find the probability of landing on purple twice. Added to the interior of rectangle, top right, x, y, bottom left, x, y, bottom right, y squared.