10 points Score Count [40-50) (50-60) 2 [60-70) 4 170-80) 5 [80-90) 2 (90-100) 2 What percentage of students earned a grade of less than 70? Round your answer to the nearest whole number. % r10 points Score Count [40-50) 2 (50-60) 2 [60-70) 170-80) 5 [80-90) 2 | (90-100) 2 What percentage of students earned a grade of less than 70? Round your answer to the nearest whole number. %