Becca has a biscuit recipe that uses of a tablespoon of salt for every of a cup of flour. In order to have enough biscuits for her family that is visiting, Becca is making a batch of biscuits using 3 cups of flour and blank tablespoons of salt.
The ratio is 1tsp of salt:1 cup of flour
if she is using three cups of flour the increase would be times 3 therefor she uses 3(1)tsp of salt. (3 table spoons)