Question

Elton is a candle maker. Each 15cm long candle he makes burns evenly for 6 hours.
If Elton makes a 45cm long candle, how long would it burn?

Answer 1

Answer:18 hours

Step-by-step explanation:

For,

15cm,time=6hrs.....(1)

And,

45cm=3×15cm.....(2)

Therefore,time taken will be

3×15=3×6....(from 1)

=18hrs

Answer 2

Step-by-step explanation:

as the length of candle increases, the ex to extent of time also increases.

so, this is direct proportion.

when the length of candle=15cm.

then the time for burning=6hours.

if the length of candle=45cm.

then let the time for burning be x.

15cm/6 hours = 45cm/x.

15cm×6hours=45cm×x.

90=45x

x=2