The monthly salary $S$ of a shop assistant is the sum of a fixed salary of 500 $p l u s$ 5 $1500$

5000$

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15000$

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20000$

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25000$

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Solution

The correct option is C 20000$
Let $S$ be the total monthly salary and $x$ be the monthly sales, hence
$S = 500 + 5$ $%$ $\times x$
Find sales $x$ , so that $S = 1500$
Hence, $1500 = 500 + 5$ $%$ $\times x = 500 + 0.05 x$
Solve for $x$ :
$x = \frac{(1500 - 500)}{0.05} =$ 20000$

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The monthly salary S of a shop assistant is the sum of a fixed salary of 500plus5 1500

The correct option is C 20000$Let S be the total monthly salary and x be the monthly sales, henceS=500+5 % ×xFind sales x, so that S=1500Hence, 1500=500+5 % ×x=500+0.05xSolve for x:x=(1500−500)0.05=20000$

The monthly salary $S$ of a shop assistant is the sum of a fixed salary of 500 $p l u s$ 5 $1500$

The correct option is C 20000$
Let $S$ be the total monthly salary and $x$ be the monthly sales, hence
$S = 500 + 5$ $%$ $\times x$
Find sales $x$ , so that $S = 1500$
Hence, $1500 = 500 + 5$ $%$ $\times x = 500 + 0.05 x$
Solve for $x$ :
$x = \frac{(1500 - 500)}{0.05} =$ 20000$