1. Using a 3 x 3 ft square to estimate a crowd in a 100 x 150 ft field. What would the equation/formula be?

1)  Using a 3 x 3 ft square to estimate a crowd in a 100 x 150 ft field. What would the equation/formula be?

 

          Since a 3 ft x 3 ft square contains 9 square feet and a 100 ft x 150 ft field contains 15,000 square feet:

          let  x  be the number of persons in a 3 ft x 3 ft square and  y  be the number of persons in a 100 ft x 150 ft field

          --->   y  =  (15 000 / 9) · x

 

2)  Using a 10 x 10 ft square to estimate a crowd in a 250 x 250 ft field. What would the equation/formula be?

         

         Since a 10 ft x 10 ft square contains 100 square feet and a 250 ft x 250 ft field contains 62,500 square feet:

          let  x  be the number of persons in a 10 ft x 10 ft square and  y  be the number of persons in a 250 ft x 250 ft field

          --->   y  =  (62 500 / 100) · x                      --->   y  =  625x