John had a 55 in English class at midterm. At the end of the term his grade had improved to 68. What is the percent of increase in John's grade? If necessary round to the nearest percent.

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percentage increase = (increase / initial marks) *100

increase= end term-midterm thus 68-55=13

initial marks= midterm marks =55

thus %increase=(13/55)*100=23.64%

rounding off gives 24%

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