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Sagot :
If Ann has 30% less money than mary, and jessica has 70% more money than mary and If the three of them have a total of $102, then Ann has $50.7, Mary has $51 and Jessica has $51.7
What is meant by percentage?
A % is a quantity or ratio that, in mathematics, represents a portion of one hundred. It can be stated as a decimal or a fraction and is frequently represented by the sign "%". 50%, for instance, can be written as 0.5 or 1/2. A component or proportion of an entire is represented using percentages. For instance, if a student receives a 75% on an exam, it indicates that they correctly answered 75 out of 100 questions individually. Percentages are often used in everyday life to represent changes such as a rise or fall in pricing, an increase or reduction in population, or a growth or drop in sales. Percentages may be determined in mathematics using a variety of formulae and ideas including proportions, ratios, and decimals.
How to solve?
Ann has 30/100 * $x = $0.3x less money than Mary
Jessica has 70/100 * $x = $0.7x more money than Mary
Mary, Ann and Jessica have a total of $102
Mary + Ann + Jessica = $102
Mary + (Mary - $0.3x) + (Mary + $0.7x) = $102
3Mary = $102 + $0.3x + $0.7x
3Mary = $102 + $1x
3Mary = $102 + $x
3Mary - $x = $102
2Mary = $102
Mary = $102/2 = $51
Ann = Mary - $0.3x = $51 - $0.3x = $50.7
Jessica = Mary + $0.7x = $51 + $0.7x = $51.7
Ann has $50.7, Mary has $51 and Jessica has $51.7.
To learn more about percentage, visit:
https://brainly.com/question/29306119
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If Ann has 30% less money than mary, and jessica has 70% more money than mary and If the three of them have a total of $102, then Ann has $50.7, Mary has $51 and Jessica has $51.7
What is meant by percentage?
A % is a quantity or ratio that, in mathematics, represents a portion of one hundred. It can be stated as a decimal or a fraction and is frequently represented by the sign "%". 50%, for instance, can be written as 0.5 or 1/2. A component or proportion of an entire is represented using percentages. For instance, if a student receives a 75% on an exam, it indicates that they correctly answered 75 out of 100 questions individually. Percentages are often used in everyday life to represent changes such as a rise or fall in pricing, an increase or reduction in population, or a growth or drop in sales. Percentages may be determined in mathematics using a variety of formulae and ideas including proportions, ratios, and decimals.
Ann has 30/100 * $x = $0.3x less money than Mary
Jessica has 70/100 * $x = $0.7x more money than Mary
Mary, Ann and Jessica have a total of $102
Mary + Ann + Jessica = $102
Mary + (Mary - $0.3x) + (Mary + $0.7x) = $102
3Mary = $102 + $0.3x + $0.7x
3Mary = $102 + $1x
3Mary = $102 + $x
3Mary - $x = $102
2Mary = $102
Mary = $102/2 = $51
Ann = Mary - $0.3x = $51 - $0.3x = $50.7
Jessica = Mary + $0.7x = $51 + $0.7x = $51.7
Ann has $50.7, Mary has $51 and Jessica has $51.7.
To learn more about percentage, visit:
brainly.com/question/29306119
#SPJ4
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