25% of =15 what is in the blank?
It seems to me that the 'blank' is after 'of', and you're looking for the number that 15 is 25% of.OK. Call it 'M' (for 'Mystery number') 25% of M = 15' 25% ' means 0.25 .and' of ' means 'times'.So 0.25 M = 15Divide each side by 0.25: M = 60 .