If f, g, and h are positive numbers such that (f/(f+g))(10) + (g/(f+g))(20)=h and if f<g which of the following could be the value of h? Choose the correct choice from the following answers: A) 10 B) 12 C) 15 D) 18 E) 30
The answer is D. For any positive f and g, h is a number between 10 and 20. Since f &lt; g, weight of 10 is inferior of weight of 20 -&gt; h is &gt; 15 -&gt; 18 is the answer.
<result>D</result>
If f, g, and h are positive numbers such that (f/(f+g))(10) + (g/(f+g))(20)=h and if f<g which of the following could be the value of h?