ACT SAT PREP Learn how to determine the final weight given a ratio of weights

The video tutorial explains how to solve a problem involving a trail mix with a specific ratio of peanuts, raisins, and sesame seeds. The problem is to determine how many ounces of the entire mixture can be made with 10 ounces of peanuts. The tutorial breaks down the ratio of 2:4:5 for peanuts, raisins, and sesame seeds, and explains how to apply this ratio to find the total weight of the mixture. By understanding the ratio of peanuts to the whole mixture, the tutorial demonstrates the calculation process, resulting in a total mixture weight of 55 ounces.

How do you derive the new whole mixture weight from the given ratio?

What is the significance of the cross product in determining the mixture's weight?