How do I write in this for pseudocode for Python 3.0 that describes all steps required to solve the problem?  I appreciated for your help. 

Here example:

MoonBucks Coffee Company - Coffee Prices
40 pounds or more          $7.50 per lb.
20 pounds or more          $8.75 per lb.
10 pounds or more          $10.00 per lb.
1 to 9 pounds                  $12.00 per lb.

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How would I solve this problem for Output?  

How many pounds are you ordering? 15
Cost of coffee $150.00
7% sales tax $10.50
Shipping fee $15.00
Total payable $175.50

How many pounds are you ordering? 50
Cost of coffee $375.00
7% sales tax $26.25
Shipping fee $0.00
Total payable $401.25