Percentages

_      % N

To perform a calculation involving a percentage, enter a number and press _to append the % sign.

To express a value as a percentage, press % N after the value.

Example

2 _ V 150 <

1 P 5 " % N <

³ Problem

A mining company extracts 5000 tons of ore with a concentration of metal of 3%, and 7300 tons with a concentration of 2.3%. On the basis of these two extraction figures, what is the total quantity of metal obtained?

If one ton of metal is worth $280, what is the total value of the metal extracted?

3 _ V 5000 <

T 2.3 _ V 7300 <

V 280 <

The two extractions represent a total of 317.9 tons of metal for a total value of $89,012.