Need help with calculator

[hoeleeschitt]

Hello!!

First of all, I am not asking you guys to do my homework for me but i am stuck at arithmetics so I would appreciate any guidance.

We are asked to design a rent calculator for Shoreline and Wavecrest communities. below are the specifications:

- Shoreline adds $140
- Fireplace adds $27
- Smoking subtracts $11

I wrote the code for these basic features but I am stuck on how to add fireplace to Shoreline price or subtract smoking. I can write a statement for each operation but our teacher wants the computer to do all the calculations. He says the fewer, the better.

here's what i've got so far and I would appreciate any hints.

    Private Sub btnRent_Click(sender As Object, e As EventArgs) Handles btnRent.Click
        If cboBuilding.Text = "Shoreline" Then
            lblDisplay.Text = txtBaseRent.Text + 140
        End If

        If chkFireplace.Checked = True Then
            lblDisplay.Text = txtBaseRent.Text + 27
        End If

        If chkNonSmoking.Checked = True Then
            lblDisplay.Text = txtBaseRent.Text - 11
        End If

    End Sub

many thanks in advance!!!