1.                                                                      

a)  10 · 25% =  2.5  
      2.5 values up from the bottom puts it in the interval   77 - 84          J

b)  10 · 75% = 7.5
     7.5 values up from the bottom puts it in the interval   85 - 92        

c)  5 students received a grade of 85% or higher. 
         What percent of 10 is 5?
        n% (10) =   5
                10       10
          n%  =   .5
                               n =  50%        J
    50% of the students received a pencil.