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brand of cereal had 1.2mg1.2\,\text{mg} of iron per serving. Then they changed their recipe so they had 1.8mg1.8\,\text{mg} of iron per serving. What was the percent increase in iron?

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Q. brand of cereal had 1.2mg1.2\,\text{mg} of iron per serving. Then they changed their recipe so they had 1.8mg1.8\,\text{mg} of iron per serving. What was the percent increase in iron?
  1. Identify Amounts: Identify the original amount of iron and the new amount of iron after the recipe change.\newlineOriginal amount of iron per serving = 1.2mg1.2\,\text{mg}\newlineNew amount of iron per serving = 1.8mg1.8\,\text{mg}
  2. Calculate Increase: Calculate the increase in the amount of iron per serving.\newlineIncrease in iron = New amount of iron - Original amount of iron\newlineIncrease in iron = 1.8mg1.2mg1.8\,\text{mg} - 1.2\,\text{mg}\newlineIncrease in iron = 0.6mg0.6\,\text{mg}
  3. Calculate Percent Increase: Calculate the percent increase in iron per serving.\newlinePercent increase = (Increase in iron/Original amount of iron)×100%(\text{Increase in iron} / \text{Original amount of iron}) \times 100\%\newlinePercent increase = (0.6mg/1.2mg)×100%(0.6 \, \text{mg} / 1.2 \, \text{mg}) \times 100\%\newlinePercent increase = 0.5×100%0.5 \times 100\%\newlinePercent increase = 50%50\%

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