Question

A candle burns as shown in the graph.

If the height of the candle is 8 centimetres, approximately how long has the candle been burning?

A 0 hours

B 24 minutes

C 64 minutes

D$5\frac{1}{2}$hours

Short answer

If the height of the candle is 8 centimetres, the candle has been burning for$5\frac{1}{2}$hours approximately.

Therefore, the option D is correct.

Step-by-step solution

Part a. Step 1. Observe the graph.

The graph is:

From the above graph it can be noticed that when the height of the candle is 8 centimetres, the time taken is$5\frac{1}{2}$ hours approximately.

Part a. Step 2. Determine approximately how long has the candle been burning.

If the height of the candle is 8 centimetres, the candle has been burning for$5\frac{1}{2}$hours approximately.

Therefore, the option D is correct.