Decrease 90 in the ratio \( 2: 3 \)

To decrease 90 in the ratio \( 2:3 \), first, find the total parts in the ratio, which is \( 2 + 3 = 5 \). Next, divide 90 by 5, which equals 18. This means each part of the ratio corresponds to 18. For the decrease based on the ratio \( 2:3 \), you would subtract 2 parts, which is \( 2 \times 18 = 36 \). Therefore, decreasing 90 by this amount results in \( 90 - 36 = 54 \). Did you know that ratios are used not only in math but also in cooking? Say you want to make a sauce that requires a specific ratio of ingredients; understanding how to scale recipes allows you to whip up the perfect amount every time without guesswork! When it comes to ratios, a common mistake is forgetting to convert them before applying them to a total. Always ensure to break down the ratio properly and verify your calculations. It’s also wise to double-check the parts you've assigned to avoid miscalculating your results!