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Linear Equation

If r = 5z t...

Question

If $r = 5 z$ then $15 z = 3 y$ , then $r =$

y

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2 y

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5 y

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10 y

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15 y

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Solution

The correct option is A $y$
Let $r = 5 z$ .... (1)
and $15 z = 3 y$ ....(2)
Dividing equation (2) by $3$
$∴ 5 z = y$
Putting this value in equation (1), we get
Which implies $r = 5 z = y$

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