Variables

Question

How do i create a varible for the following

cost £ as a double
manCharge £ as a double
postCode as a string

Answer 1

What else have you learnt in the course so far if you don't know how to create a variable?

Answer 2

I have the following
String postCode = "XXX XXX";
double manCharge = 1;
double labourCharge = 1;