Answer:
To get the proportion of water bottles that held at least 24 ounces, divide the number of bottles having a volume of 24 ounces or more by the total number of bottles.
Lets figure out, how many water bottle volume is higher than 24 ounces 24,28 and 32 ounces
3 ounces/ 6 water bottle's volume and it can be simplified into
1/2