Jill is making lemonade. The original concentration was 25 mL of concentrate to 2 L of water. People found that too strong so she decreased the concentration to 20 mL of concentrate to 2 L of water. By what percentage did she decrease the concentrate?
A)
2%
B)
3%
C)
5%
D)
20%

Question

Jill is making lemonade. The original concentration was 25 mL of concentrate to 2 L of water. People found that too strong so she decreased the concentration to 20 mL of concentrate to 2 L of water. By what percentage did she decrease the concentrate?
A)
2%	
B)
3%	
C)
5%	
D)
20%

radar · Answer

Ask yourself, how many mL of concentrate was the reduction.
Then ask yourself what percentage of the reduction from the original quantity.