Answer:
approximately 64 grams of powder.
Explanation:
Let's set up the problem using variables:
Let's say the amount of powder needed is P grams.
According to the problem, each batch of formula contains 5 times as much 2B water as powder. So, the amount of water in grams would be 5P grams.
The problem states that the keeper uses 320 grams of water. We can set up the equation:
5P = 320
To find the value of P (the amount of powder needed), we divide both sides of the equation by 5:
P = 320/5
P = 64
Therefore, the keeper will need to add approximately 64 grams of powder.