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Rocky
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2016-04-12 11:17:52
$\dfrac{2}{7}$ of a number is two less than $\dfrac{1}{2}$ of another number. If the sum of the two numbers is 15, what is their product?
$\dfrac{2}{7}$ of a number is two less than $\dfrac{1}{2}$ of another number. If the sum of the two numbers is 15, what is their product?
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jiju
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2016-04-13 08:54:36
Let numbers be $x$ and $(15-x)$
$\dfrac{2x}{7}=\dfrac{15-x}{2}-2\\4x=105-7x-28\\11x=77\\x=7$
Numbers are 7 and 8
Required product
$=7×8=56$
Let numbers be $x$ and $(15-x)$<br><br>$\dfrac{2x}{7}=\dfrac{15-x}{2}-2\\4x=105-7x-28\\11x=77\\x=7$<br><br>Numbers are 7 and 8<br><br>Required product<br>$=7×8=56$
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