Which equations could you use to solve the following problem?

Seventy-eight is 55% of what number?

78 = (0.55) w

p = (0.85) 78

x/78 = 55/100

78/x = 55/100

If you would like to solve the following problem, you can do this like this:

Seventy-eight is 55% of what number?

78 = 55% of x

78 = 55% * x

78 = 55/100 * x

78 = 0.55 * x

The correct result could be: 78 = (0.55) w and 78/x = 55/100.