A 3one half
2
1
-inch candle burns down in 7 hours. Assuming the candles are the same thickness and make (that is, directly proportional), how long would it take a 2one half
2
1
-inch candle to burn down?
To solve this problem, we can set up a proportion:
3.5 inches / 7 hours = 2.5 inches / x hours
Now we can cross multiply to solve for x:
3.5x = 7 * 2.5
3.5x = 17.5
x = 17.5 / 3.5
x = 5
Therefore, it would take a 2one half-inch candle 5 hours to burn down.