© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-30X
Ù
S: A Guide for Teachers
44
Three people babysit for $3.25 each
per hour. First person works 16 hours.
Second person works 12 hours. Third
person works 17 hours. How much did
each person earn?
%
™
Press
Display
%
™
K =
K =
DEG
V
3.25
<
K = *3.25
K = *3.25
DEG
K
-
~~
'
DEG
K
16
<
16*3
16*3..25
25
'
52.
52.
DEG
K
12
<
12*3
12*3..25
25
'
39.
39.
DEG
K
17
<
17*3
17*3..25
25
'
55.25
55.25
DEG
K
%
™
(Constant mode is off.)
~~
'
DEG
K
Constant
Содержание -30XIIS - Handheld Scienfic Calculator
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