Final answer:
To find the amount of solution C needed for 75 mL of solution D and the amount of solution D needed to create 168 mL of disinfectant, we need to establish a ratio from the provided mixed table data and solve for the missing amounts using proportions and cross-multiplication.
Step-by-step explanation:
To determine the number of milliliters of solution C needed when using 75 milliliters of solution D, we first look at the table and try to identify a pattern or ratio between solution C and D. No explicit ratios are given, but we can deduce it from the provided values. For example, if we were given that 6 mL of solution C corresponded to 175 mL of solution D, we would set up our proportion based on this known ratio.
Without the specific table data, let's assume that the ratio is such that 6 mL of C corresponds to 175 mL of D. We could solve for the unknown amount of C using a proportion:
6 mL C / 175 mL D = x mL C / 75 mL D
Cross-multiply to solve for x, we get:
x = (6 mL C * 75 mL D) / 175 mL D
The numbers would then be calculated to find the amount of solution C for 75 mL of D.
To know how many milliliters of solution D are required to create 168 milliliters of disinfectant, a similar approach would be taken by setting up a proportion based on the given information about milliliters of disinfectant and solution D. We would have to know the ratio of disinfectant to solution D, for example:
12 mL Disinfectant / x mL Solution D = 168 mL Disinfectant / y mL Solution D
Using cross-multiplication, we could solve for y, the required amount of solution D.