Question

Alex lights a candle every 10 minutes. Each candle burns for 40 minutes and then goes out. How many candles are alight 55 minutes after Alex lit the first candle? Show the solution.

Answer 1

3

Explanation:

5 candles would be lit within 55 minutes

however after the 40th minute one would go out

and then another 10 minutes later

so at the 40 and 50 minute mark, a candle out go out each

therefore at 55 minutes only 3 candles would remain