C=cost=560
W=# of Workers=10
D=# of Days=8
K= constant variation
The cost of the labor varies jointly as the number of workers and number of days.
>>> C=KWD
560=K(10)(8)
560=K(80)
560/80=K
THE ANSWER IS LETTER C.7
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Answers & Comments
C=cost=560
W=# of Workers=10
D=# of Days=8
K= constant variation
The cost of the labor varies jointly as the number of workers and number of days.
>>> C=KWD
560=K(10)(8)
560=K(80)
560/80=K
THE ANSWER IS LETTER C.7