Two cylindrical candles A and B of same height (H cm) and radius r and r/2 cm, respectively are ignited at the same time. If the candle A is reduced to 0.8 H height in 30 minutes, what would be the remaining height of the candle B in 30 minutes?
1
0.6 H
2
0.4 H
3
0.2 H
4
0.8 H