Question

A 25 L solution has sugar: water = 3:2. How much water to make sugar: water = 1:1?

• A. 2.5 L
• B. 5 L
• C. 7.5 L
• D. 10 L

Answer 1

Answer:

B. 5 L

Total solution = 25 L

Sugar : Water = 3 : 2

So:

• Sugar = $(25 \times \frac{3}{5} = 15) L$

• Water =$(25 \times \frac{2}{5} = 10) L$

Let (x) liters of water be added.

Then:

• $\frac{15}{10+x} = \frac{1}{1}$
  

  15 = 10 + x
  x = 5
  

Answer: 5 liters of water should be added.