Grace Marks
Algebra
Level
1
Andrew gets 40 marks out of 60 in his school test. His teacher gave him a grace of 30 marks and calculated his percentage of marks from an aggregate total of 100 marks. What difference did the grace marks create in Andrew's original marks?
6.4% Decrement
3.34% Decrement
6.4% Increment
3.34% Increment
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1 solution
Original percentage = 66.67%
Percentage after grace = 70%
Increase = 3.34%