Selena rides her bicycle to work. it takes her 15 minutes to go 3 miles. how many feet will she travel in 3 minutes

Selena traveled 0.6 miles in 3 minutes which is a total amount of 3,168 feet since one mile is equal to 5,280 feet. 

Ratio and proportion

distance:time
given that it takes 15 minutes for 3miles
3mi:15min is the ratio

should be the same as the other
3mi:15min=?mi:3min

convert to fraction
3mi/15min=?mi/3min
1mi/5min=?mi/3min
times both sides by 3min
3min mi/5min=?mi
3mi/5=?mi
3/5mi=?mi

she will travel 3/5mi in  3mins

The answer would be 27 because assuming that each package has 1 bar of soap and 1 tube of toothpaste, after 27 packages they would run out of toothpaste