Question

The ratio of red poms to yellow poms on a float is 5 to 7. If there are 392 yellow poms on the float, how many red poms are there? *

Answer 1

$\bf \cfrac{\stackrel{red}{poms}}{\stackrel{yellow}{poms}}\qquad 5:7\qquad \cfrac{5}{7}\qquad \qquad \cfrac{\stackrel{red}{r}}{\stackrel{yellow}{392}}=\cfrac{5}{7}\implies r=\cfrac{392\cdot 5}{7}$