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PAGE: 591 | SET: Exercises | PROBLEM: 23 |

varies directly as
and
varies inversely as
.
Find when
and
and
when
and
.
Consider the values are and
.
Find .
varies directly as
, and
goes in the numerator and
varies inversely as
,and
goes in the denominator.
(Solve for
)
(Set the two proportions equal to each other)
(Substitute
and
)
(Cross multiply)
(Simplify)
(Divide each side by
)
(Cancel common term)
Therefore, the value of is
.
When and
and the value of
.

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