VickyL
contestada

Mrs. Bennett has graded 20% of her 150 students' papers. How many papers does she still need to finish grading?

Respuesta :

atrochelmann
120

You can find out how many she has graded by multiplying 150 by the decimal version of 20% (.20). Then, subtract the number you get by 150.
150 - (150 x 20%)
         or
150 - (150 x .2)

Simplified:

150 - 30
    120

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