Bailie read that she can burn 236 calories by bicycling at 10 mph for 1 hour, or 502 calories by bicycling at 14 mph for 1 hour. How long would she need to bicycle at 10
mph to burn as many calories as she would by bicycling at 14 mph for 1 h? Set up as a proportion

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.