What is the dependent variable in project which melts faster ice with salt or out salt?

The dependent variable in a project about which melts faster ice with salt or without salt would be the time taken for the ice to melt.

The independent variable in this case would be the presence or absence of salt. The researcher would control this variable by adding salt to one ice cube and not to the other, or by using two different ice cubes, one with salt and one without. The researcher would then observe how long it takes for each ice cube to melt.

The dependent variable would be the time taken for the ice to melt. The researcher would measure this variable by using a stopwatch or clock to time how long it takes for each ice cube to melt completely.

By controlling the independent variable (presence or absence of salt) and measuring the dependent variable (time taken to melt), the researcher can determine whether the presence of salt affects the rate at which ice melts.