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Multiplication and Division of Rational Numbers

Simplify the ...

Question

Simplify the following.
$72 o f 52 \times 20 \div (20 + 3) - 11$

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Solution

$72 o f 52 \times 20 \div (20 + 3) - 11 = 72 o f 52 \times 20 \div 23 - 11 = 3744 \times 20 \div 23 - 11 = 3744 \times \frac{20}{23} - 11 = \frac{74880}{23} - 11 = \frac{74880 - 253}{23} = \frac{74627}{23}$
Hence, the required answer is $\frac{74627}{23} .$

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