Question

a cook uses a ratio of 5 parts flour to 3 parts water when baking bread. today, the cook made a large batch of bread with 10 cups of water. how many more cups of flour than water did the cook use?
write your answer as a whole number, decimal, proper fraction, or mixed number.
cups

Explanation:

Step1: Set up proportion for flour

Let $f$ = cups of flour. Ratio: $\frac{5}{3}=\frac{f}{10}$

Step2: Solve for flour amount

$f = \frac{5\times10}{3} = \frac{50}{3}$

Step3: Calculate difference

Subtract water from flour: $\frac{50}{3}-10 = \frac{50}{3}-\frac{30}{3}$

Answer:

$\frac{20}{3}$ or $6\frac{2}{3}$ cups