Question

1 candle is 50cm high and can burn for 3hours. another one is 70 cm high and can burn for 6hours. how long does it take for this two candles to reach the same height​

Answer 1

Answer:

let this happens after time t then

Step-by-step explanation:

50 - 50/6 × t = 70 - 70/3 ×t

(140/6 - 50/6 )t = 20

90/6 × t = 20

15t = 20

t = 4/3 hours or 80 minutes