An army base had provisions for 300 soldiers for 90 days. After 20 days, 50 soldiers left the army base.
How much longer after this will the food last if the
remaining soldiers consume food at the same rate?

You coordinate volunteers for litter cleanup in local parks. your spreadsheet lists drivers and the number of seat belts in each driver’s car. the spreadsheet calculates the number of drivers (d) and the total number of seat belts (s). you want to know the maximum number of volunteers, besides drivers, that can be transported to the park in a single trip given that each person must have a seat belt of their own.