Question : Simplify the given expression.
$18 \div 3$ of $2 \times 5+72 \div 18$ of $2 \times 3-4 \div 8 \times 2$
Option 1: $20$
Option 2: $\frac{20}{3}$
Option 3: $\frac{25}{3}$
Option 4: $25$
Correct Answer: $20$
Solution :
Given: $18 \div 3$ of $2 \times 5+72 \div 18$ of $2 \times 3-4 \div 8 \times 2$
$=18 \div 6 \times 5+72 \div 36 \times 3-4 \div 8 \times 2$
$=3 \times 5+2 \times 3-1$
$=15+6-1$
$=20$
Hence, the correct answer is $20$.
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