Trying to write a source code for total cost of shirts.

The total cost of shirts is determined by the following formula:

if number of shirts is greater than 15

costPerShirt = 5.50

if number of shirts is less than 15

costPerShirt = 8.50

The program must output the total cost for 1 to 10 shirts.

I am suppose to use if else statement and loop, can anyone help me with this or give me reference to use for help. My first program.

Thanks