Answer:
45 cm long candle would take 18 hours to burn.
Step-by-step explanation:
Given:
Elton is a candle maker.
Each 15 cm long candle he makes burns evenly for 6 hours.
If Elton makes a 45 cm long candle.
Now, to find hours it would take to burn 45 cm long candle.
So, to solve by using unitary method:
Each 15cm candle take time to burn = 6 hours.
So, 1 cm candle take time to burn = [tex]\frac{6}{15}\ hour.[/tex]
Thus, 45 cm candle take time to burn = [tex]\frac{6}{15} \times 45\ hours[/tex]
[tex]\frac{6}{15}\times 45\\\\=0.4\times 45\\\\=18\ hours.[/tex]
Therefore, 45 cm long candle would take 18 hours to burn.
