Question

question 18
1 pts
if 5 oz of a solution contains 4 1/2 oz of water, how many oz of water are in 20 oz of solution?

18 oz
20 oz
200 oz
180 oz

Explanation:

Set up the proportion

$$ \frac{4\frac{1}{2}\text{ oz water}}{5\text{ oz solution}} = \frac{x\text{ oz water}}{20\text{ oz solution}} $$

Solve for the unknown quantity

$$ x = 20 \times \frac{4\frac{1}{2}}{5} $$

Calculate the final value

$$ x = 4 \times 4\frac{1}{2} = 4 \times \frac{9}{2} = 18\text{ oz} $$

Answer:

• (A) 18 oz (Correct answer)
• (B) 20 oz
• (C) 200 oz
• (D) 180 oz