The required percentage of Jenny's great-grandmother age is Jenny's age is 13%.
The percentage is defined as a ratio expressed as a fraction of 100.
For example, If Misha obtained a score of 67% on her exam, that corresponds to 67 out of 100. It is expressed as 67/100 in fractional form and as 67:100 in ratio form.
Jenny's great-grandmother is 90 years old and Jenny is 12 years old.
To calculate the percentage of Jenny's age compared to her great-grandmother's age, you can divide Jenny's age by her great-grandmother's age and then multiply by 100.
So, (12/90) × 100 = 13.33%.
However, the answer should be in exact percent with no decimal, so the answer is 13%.
Learn more about the percentages here:
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Am I suppose to put a symbol or number or variable ?
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