A group of women planned to raise Sh. 12000 for a charity cause. If five women were unable to attend, each of the remaining women had to contribute an additional Sh. 400. Determine the original number

Here's a step-by-step solution to the problem:

Let $x$ be the original number of women in the group.
The total amount to be raised is Sh. 12000.

a) Write the expression for the original contribution per person.
If there are $x$ women and they need to raise Sh. 12000, the original contribution per person is the total amount divided by the number of women.

$$\text{Original contribution per person} = \frac{12000}{x}$$

The expression for the original contribution per person is $\boxed{\frac{12000}{x}}$.

*b) Write an expression for the contribution per person after five women were unable