Answer:
1.6 OR 8/5
(They are the same thing.)
Divide the amount of teenagers that smoked by the total population:

Multiply this decimal by 100 to convert into a percentage:

To round to the nearest decimal place, look at the hundredths value:
8.5
3
3 > 5
8.53 -> 8.5
8.5% of teenagers reported that they smoked at least one cigarette.
The ratio would be 3:4, or however you write ratios.
Hope this helped! :)
Answer:
2 ounces
Step-by-step explanation:
25/12.5 = 2