Compared effort when developing Android and iOS app
<p>Given:</p>

<ul>
<li>A desired application called APP wich will present 2 "forms" and will comunicate with a web server to call 3 Web Methods.</li>
<li>One developer with nearly equivalent expertise on iOS and Android platforms.</li>
<li>X: required effort to build APP for Android only.</li>
<li>Y: required effort to build APP for iOS only.</li>
<li>X = K1 * Y where K1 is a real number.</li>
<li>Z = K2 * (X + Y) where K2 is a real number and Z is defined as the required effort to build  APP for both Android an iOS.</li>
</ul>

<p>Please answer:</p>

<ul>
<li>What is the approximate value of K1?</li>
<li>Assuming that the formula for Z is acceptable, what is the approximate value of K2?</li>
</ul>
