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23-06-2015
Mathematics

Answered

If y varies directly as x and y = 144 when x = 12, what is the value of y when x = 17?

Verified Answer :

23-06-2015

Direct variation:
\(y=kx\)

y=144 when x=12.
\(144=12k \\ k=\frac{144}{12} \\ k=12\)

y=? when x=17.
\(y=12 \times 17 \\ y=204\)

y=204 when x=17.

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