What is 2/4 divided by 2/1

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

How many grams the dog will eat in 3 days?

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min. if they did not stop driving, how many miles could kyle and elijah drove in a whole day? ? 1 day = 24 hours. plzzz write a proportion i will give you 100 points