Answer:
286 ml of water
Explanation:
Since 500ml Of Dextrose 30% is needed to be produced from Dextrose 70%. Let us assume that x ml of Dextrose 70% is mixed with water to get 500 ml of Dextrose 30%. Hence:
30% of 500 ml = 70% of x
70x = 15000
Dividing through by 70:
x = 214 ml
Therefore 214 ml of Dextrose 70% is used
The amount of water used is gotten using:
amount of water = Amount of Dextrose 30% - Amount of Dextrose 70%
amount of water = 500 ml - 214
amount of water = 286 ml of water
