Because the ratio can be expressed as a fraction, it is understood that neither part is zero. Ratios compare two quantities, and you don't compare something with zero. So if we are finding the ratio of x to y, we assume that neither x nor y is zero. Hope that helps. Hello Ben, I am still not clear ...

According to Italy's top anti-Mafia prosecutor, the ailing mobster came to take refuge in Corleone, a town famous because of the "The Godfather" and near to those he most trusted. I have a question regarding the correct answer I provided above: is parallelism clear in the underlined part? when I fi...