HP HP-65 - Page 30

Recalling a number does not remove it from the storage register.
Rather, a copy of the stored number is transferred to the display
—the original remains in the storage register until either: (1) a
new number is stored in the same register, (2) the calculator is
turned off, or (3) all nine storage registers are cleared by pressing
[ [REc]. Recalling a number from a register will cause the stack
to lift unless the lift is disabled.
Sample Case 1. A customer has bought three items priced at
$1,000, $2,000, and $3,000, respectively. Your policy is to grant
a 5% discount on all purchases over $5,000. How much will the
customer pay for each of the three items? What is the total cost?
Solution:
Press See Displayed Comment
1 ENTER4 .05 — STO Stores constant 0.95 —
] 95% in register R,.
1000 RCL Amount customer will
pay for first item.
X
X
Amount customer will
pay for second item.
2000 RCL
3000 [ReL (1] (x Amount customer will
pay for third item.
E & Total cost.
Sample Case 2. The capacity and height of three tanks are listed
below in U.S. units. What is the capacity and height of each tank
in metric units?
Capacity (gal.) Height (in.)
Tank 1 3.6 13.5
Tank 2 5.5 20.9
Tank 3 11.3 32.8
Remember that: 1 U.S. gallon = 3.7854 liters
1 inch = 2.5400 centimeters