Each month Edna spends all her income on rent, on travel and on other living expenses. She spends $$\(\frac{1}{3}\)$$ of her income on rent. She spends $$\(\frac{1}{5}\)$$ of her income on travel. She spends $$\(\$ 420\)$$ of her income on other living expenses. Work out her income each month. $$\(\$\)$$

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