100, 200, 300, 400, 500, 600, 700, 800, 900
600
The answer is 600.
4,700.
450 is half way between 300 and 600.
100, 200, 300, 400, 500, 600.
They are: 100 200 300 400 500 and 600
100, 200, 300, 400, 500, 600, 700.
100, 200, 300, 400, 500, 600, 700, 800, 900
100, 200, 300, 400, 500, 600, 700, 800, 900, 1000
100, 200, 300, 400, 500, 600, 700, 800, 900
% rate:= 600/300 * 100%= 2 * 100%= 200%
100 + 500= 600.
100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, . . .
the change is 600 - 500 = 100 100 of the original (500) is 100/500 or 1/5 1/5 is 20%
The nearest 100 is 500.
The first 10 multiples of 100: 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000