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Quantitative Aptitude

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State whether...

Question

State whether the statement is True or False.
Evaluate: $(2 a + 0.5) (7 a - 0.3)$ is equal to $14 a^{2} + 2.9 a - 0.15$ .

A

True

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B

False

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Solution

The correct option is A True
$(2 a + 0.5) (7 a - 0.3) = 2 a \times (7 a - 0.3) + 0.5 \times (7 a - 0.3) = 14 a^{2} - 0.6 a + 3.5 a - .15 = 14 a^{2} + 2.9 a - .15$

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