MathDB
Proportionality Between Variables

Source:

June 7, 2009

Problem Statement

The numbers x, y, z x,\,y,\,z are proportional to 2, 3, 5 2,\,3,\,5. The sum of x x, y y, and z z is 100 100. The number y y is given by the equation y \equal{} ax \minus{} 10. Then a a is: <spanclass=′latex−bold′>(A)</span> 2<spanclass=′latex−bold′>(B)</span> 32<spanclass=′latex−bold′>(C)</span> 3<spanclass=′latex−bold′>(D)</span> 52<spanclass=′latex−bold′>(E)</span> 4 <span class='latex-bold'>(A)</span>\ 2 \qquad <span class='latex-bold'>(B)</span>\ \frac{3}{2}\qquad <span class='latex-bold'>(C)</span>\ 3\qquad <span class='latex-bold'>(D)</span>\ \frac{5}{2}\qquad <span class='latex-bold'>(E)</span>\ 4
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