Ralph makes three kinds of donuts in one day: 24 glazed, 36 chocolate glazed, and 18 peanut butter and jelly. What is the percentage of peanut butter and jelly donuts he made that day?

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".