Answer:
Sure, here is the solution for the equation G/B=M/n:
```
B = Gn/M
```
Here is the step-by-step solution:
1. Multiply both sides of the equation by B.
```
G/B * B = M/n * B
```
2. Simplify both sides of the equation.
```
G = Gn/n
```
3. Divide both sides of the equation by n.
```
G/n = Gn/n * 1/n
```
4. Simplify both sides of the equation.
```
B = Gn/M
```
Therefore, the solution for B is Gn/M.
Explanation: