When solving ratio problems, convert all quantities to the same units and reduce the ratio to the simplest form. Write the items of the ratio in fraction form, making sure to match the actual item with the correct quantity of that item.
Begin solving ratio problems by addressing what exactly needs to be solved. Assign variables for each unique item in the problem. When solving for specific variables, cross-multiply the fractions and isolate the target variable. Cross-multiplying fractions entails multiplying the numerator of one fraction with the denominator of the other for both sets of numbers. After solving the problem, make sure the new ratio holds the numerator and denominator consistent with the original setup.