Tutoring financial math, you might often use the HP-10B. The tutor shows how easily it can apply a discount then add tax to get the final price.

Example: Imagine a handbag is regular price $85 but is discounted by 20%. Assuming 12% sales tax, find final price using the HP-10B.

Solution:

1. Key in 85
2. Key in – 20 % =
3. Key in + 12 % =

HTH:)

Source:

Hewlett-Packard HP-10B Business Calculator Owner’s Manual. Corvallis: Hewlett-Packard, 1994.

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.