what is this the difference between the amount of concentrate and water is 4 cups
It would help if you proofread your questions before you posted them.
To determine the difference between the amount of concentrate and water when the difference is 4 cups, you need to gather additional information. Specifically, you need to know the individual quantities of concentrate and water that are being compared.
If you have the exact amounts of concentrate and water, finding the difference is simple. Let's say you have 8 cups of concentrate and 12 cups of water. In this case, the difference between the two would be 8 - 12 = -4 cups. The negative sign indicates that there is a deficit of 4 cups of concentrate compared to water.
However, if you only have the information that the difference between concentrate and water is 4 cups but do not know the individual quantities, you cannot determine the specific amounts of either. In this case, you could have various scenarios where the difference is 4 cups. For example, you might have 6 cups of concentrate and 2 cups of water, or 10 cups of concentrate and 6 cups of water, and so on. Ultimately, more information is needed to pinpoint the exact quantities of concentrate and water.