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Questions  >>  SAT  >>  Math  >>  Linear Equations
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Q)

What is value of $p$ in the following system of equation ? <br> $4a =28$ <br> $15-2a =5b$

$\begin{array}{1 1} (a)\; 5\\ (b)\; \frac{1}{5} \\ (c)\; -5\\ (d)\; -\frac{1}{5} \end{array}$

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A)
$4a=28$
$\implies a =\frac{28}{4} =7$
$15-2(7) = 5b $
$\implies 5b =1$
$\therefore b = \frac{1}{5}$
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