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Question 11

$$1\frac{7}{20} \div 2.7 + 2.7 \div 1.35 + \left(0.4 \div 2\frac{1}{2}\right) \times \left(4.2 - 1\frac{3}{40}\right) = $$ ______.


Correct Answer: 3

Solution

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Here $$1\frac{7}{20} = 1.35$$, so the first term is $$\frac{1.35}{2.7} = 0.5$$ and the second term is $$\frac{2.7}{1.35} = 2$$. In the third term $$0.4 \div 2.5 = 0.16$$ and $$4.2 - 1.075 = 3.125$$, whose product is $$0.5$$. The total is $$0.5 + 2 + 0.5 = 3$$.

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