FRAME 3-22.
Solution to
Suppose jellybeans cost
||content||
.99 per pound and you bought exactly a
Frame 3-21.
quarter-pound (0.25 pounds). How much money should you give the
clerk? [Assume that there is no tax on the purchase.]
round (off)
1.99 (2 decimal places)
0.25 (2 decimal places)
9 95
39 8
49 75 (4 decimal places)
The answer is
||content||
.4975 . If you had changed
||content||
.99 into pennies when
you started, then you would owe 49.75 (49 3/4) pennies. You could take
a penny, divide it into four equal parts, and give the clerk three of them
(along with the 49), but I don't think the clerk will be very happy.
Instead, we usually round the cost to the nearest penny. That means
||content||
.4975 will be rounded to the nearest
of a dollar
(penny or cent).
____________________________________________________________________________________
FRAME 3-23.
Solution to
In the previous example, you will pay either
||content||
.49 or
||content||
.50 (the amount
Frame 3-22.
just below the calculated true price and the amount just above the
calculated true price). Look at the number line drawn below.
hundredth
∇
♦
∇
Is 0.4975 (♦) closer to 0.49 or 0.50?
____________________________________________________________________________________
MD0900
3-11