$(35 - 5 \frac{1}{2}) + \frac{1}{2}$ equals

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Solution

The correct option is B
30

We know that $(x - y) + z = x - (y - z)$ , for all numbers $x$ , $y$ , $z$ with $y > z$ .

Since the above is true for all the numbers, it must be true for $x = 35$ , $y = 5 \frac{1}{2}$ and $z = \frac{1}{2}$ also, as $y = 5 \frac{1}{2} > \frac{1}{2} = z$

So, $(35 - 5 \frac{1}{2}) + \frac{1}{2}$ = $35 - (5 \frac{1}{2} - \frac{1}{2})$ = $35 - 5$ = $30$

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