Question

1.The new number , 200 , is 400 less than the original number . What is the precent change ?
A:0.6%
B:1.5%
C:66%
D:150%
2.The attendance at a seminar in year 1 was 500 . In year 2 , the attendance changes by 100 . What was the precent change in attendance?
A:0.2%
B:0.4%
C:20%
D:40%

Answer 1

1) 200 + 400 = 600 

200/600 = 1/3 
1/3 X 100 = 33% 

200 = 33% 
400 = 66 % (C)

2) 100/500 = 1/5
1/5 X 100 = 20%  (C)

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