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- MathsIsFun
- 2005-12-14 17:58:36
Babyangel, maybe you could post future questions below here (click "Post Reply") , so that we can get a "BabyAngel" discussion going, and help you along better. 
- mathsyperson
- 2005-12-14 11:17:19
Percentage increase = (new amount - old amount)/old amount.
So in this case, it would be (67-45)/45 = 22/45.
Multiply this by 100% to get a percentage and you get an increase of 49% to the nearest whole number.
- babyangel1972
- 2005-12-14 10:45:59
Between the years 1999 and 2003 the average text book rose from $45.00 to $67.00/ What is the percent of increase (rounded to the nearest whole number) for the average text book.