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A man spends 1/3 of his salary on rent and 2/5 of the remainder on food. He saves the rest of his Income. If his savings amount to sh 4,200, find his income.

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A man spends 1/3 of his salary on rent and 2/5 of the remainder on food. He saves the rest of his Income. If his savings amount to sh 4,200, find his income.

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3/3-1/3=2/3
2/5 of 2/3= 2/5 x 2/3= 4/15
1/3 + 4/15= 5/15 + 4/15
=9/15
15/15 - 9/15= 6/15
4200= 6/15
=15/15 x 4200 x 15/6
=4200 x 15/6= 700 x 15
= 10500 

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10500
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Sh.10500

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