A 10-inch long candle lasts for 45 minutes. How long will another candle of same material and same thickness but 4 inches longer than the previous one last?

60 minutes

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71 minutes

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63 minutes

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65 minutes

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Solution

The correct option is C
63 minutes

Let us assume that new candle will last for t minutes.

Length of new candle = 10 + 4 = 14 inches

This is a direct-variation question.

t = $\frac{45 \times 14}{10}$

t = 63 minutes

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A 10-inch long candle lasts for 45 minutes. How long will another candle of same material and same thickness but 4 inches longer than the previous one last?

The correct option is C 63 minutes Let us assume that new candle will last for t minutes. Length of new candle = 10 + 4 = 14 inches This is a direct-variation question. t = 45×1410 t = 63 minutes

The correct option is C
63 minutes

Let us assume that new candle will last for t minutes.

Length of new candle = 10 + 4 = 14 inches

This is a direct-variation question.

t = $\frac{45 \times 14}{10}$

t = 63 minutes