Question

a brand of cereal had 1.2 milligrams of iron per serving. then they changed their recipe so they had had 1.8 mg of iron per serving. what was the percent increase in iron?

Answer 1

the percent increase is 50% 

Answer 2

To get the percent of increase, we will follow these steps:
1- get the difference between the two numbers:
difference = 1.8 - 1.2 = 0.6
2- divide the difference from step one by the original number (the number before the increase) and then multiply the quotient by 100 to get the percent as follows:
% of increase = (0.6 / 1.2) * 100 = 50%

Based on the above calculations, the percent of increase in the amount of iron is 50%