Abrand of cereal had 1.21.21, point, 2 milligrams (\text{mg})(mg)left parenthesis, m, g, right parenthesis of iron per serving. then they changed their recipe so they had 1.8\,\text{mg}1.8mg1, point, 8, space, m, g of iron per serving. what was the percent increase in iron

Percentage is a part of the whole. The percentage change in the iron content per serving is 48.46%.

A percentage is a way to describe a part of a whole. such as the fraction 1/4 can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Given to us

Before, 1.21 mg of iron per serving

After, 1.8 mg of iron per serving

We know about the concept of percentage, therefore,

Change in iron serving, 1.8 - 1.21 = 0.59

Percentage change in serving

We can find the percentage change in the serving as shown below,

Hence, the percentage change in the iron content per serving is 48.46%.

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i believe the correct answer is b.

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2