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Brick Calculations

𝑚 varies dir...

Question

𝑚 varies directly as 𝑛, and when 𝑚 = 154, 𝑛 = 7. Then, find the value of 𝑚 when 𝑛 = 14.

A

302

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B

308

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C

312

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D

320

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Solution

The correct option is B 308
$\frac{154}{7} = \frac{m}{14} m = \frac{154 \times 14}{7} m = 308$

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