-Scale you will need to use

Question

_______________________
| Height:3 |6 | 8 |10 |
|Burn time:45|80|120|150|
|_______________________|
The candle company wants a candle that will burn for the equivalent of 3 full days. Assuming the pattern continues, how tall should they make the candle? Round your answer to the nearest tenth of an inch.
a.
3.2 inches
c.
4.8 inches
b.
6.0 inches
d.
5.2 inches

Answer 1

I suspect a typo: 80 should be 90.
If so, then clearly, the burn time is just 15 times the height.

You don't say whether the time is in hours or minutes. I suspect minutes, but that will require quite a tall candle, if you figure out how many minutes there are in 3 days.

Answer 2

Judging by the choices, I guess the burn time is in hours. So, you want the height

h = 3*24/15