Question

If i have 47.2 then i scored a 100% on a test woth 20% of my grade. what would be my grade know.

Answer 1

47.2 = 80% of your grade = 47.2*.8 = 37.76 in new 100% gradebook
20 = 20% of your grade: 100*.2 = 20 in new 100% gradebook
20+37.76 = 57.76%

Answer 2

so my grade at the end would be 57.76%

Answer 3

Yup