It is given in the question that Elton is a candle maker. Each 15 cm long candle he makes burns evenly for 6 hours.
And we have to find if Elton makes a 45 cm long candle, how long would it burn.
Let it burn for x hours. Now we set the ratio
[tex]\frac{15}{6} = \frac{45}{x}[/tex]
Performing cross multiplication
[tex]15x =45*6[/tex]
Dividing both sides by 15
[tex]x= \frac{45*6}{15} = 18 hours[/tex]
Therefore for a 45 cm long candle, the candle will burn for 18 hours .
