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Roja earned Rs 18,000 per month. She utilized her salary in the ratio 2 : 1 : 3 for education, savings and other expenses respectively. Express her usage of income in percentage.

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Amount of Salary = Rs 18,000

(i) Total number of parts of salary = 2 + 1 + 3 

= 6 

Salary is divided into 3 portions as \(\frac{2}{6}\), \(\frac{1}{6}\) and \(\frac{3}{6}\)

Portion of salary used for education = \(\frac{2}{6}\)

Salary used for education = \(\frac{2}{6}\) x 18,000 

= Rs 6,000 

Percentage for Education = \(\frac{6000}{18000}\) x 100 

= 33.33%

(ii) Usage of salary for savings = \(\frac{1}{6}\) x 18,000 

= Rs 3,000 

Percentage for savings = \(\frac{3000}{18000}\) x 100 

= 16.67 %

(iii) Usage of salary for other expenses = \(\frac{3}{6}\) x 18,000 

= Rs 9,000 

Percentage for other expenses = \(\frac{9000}{18000}\) x 100 

= 50 %

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