For the first one:
The difference between 240 and 192 is 48. So the question now becomes "48 is what percent of 240?" Can you take it from here?
A stereo system that regularly sells for $240 goes on sale for $192 what is the percent discount
From jumpstart booklet grade 8
and
A sweater that was orginally $27.95 is on sale $19.99 estimate the percent discount
PLEase explain thanks