If $r = 2 t$ and $t = 3$ , what is the value of $2 r$ ?

2

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6

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8

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12

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Solution

The correct option is E $12$
Given, $r = 2 t$ and $t = 3$
We need to find value of $2 r$
Substitute the value of $t$ in $r = 2 t$
$∴ r = 2 (3) = 6$
$∴ r = 6$
If $r = 6$ , then $2 r = 2 (6) = 12$
$∴ 2 r = 12$ .
Hence, option E is correct.

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