B should be your answer. 125-360= -235
To solve this problem you must apply the proccedure shown below:
1. You have that
varies jointly as
and
and inversely as the product of
and
. Therefore, you can write the following equation, where
is the constant of proportionality:

2. Now, you must solve for the constant of proportionality, as following:

3. Susbtiute values:


4. Substitute the value of the constant of proportionality into the equation:

The answer is: 
Answer:
There will be 48 neutrons.
Step-by-step explanation:
Hope this helps and have a great day :)
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It's subtraction or multiplacation