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Princes register an increase of 10% on f...

Princes register an increase of 10% on foodsgrains and 15% on other items of expenditure. If the ratio of an employees expenditure on food grains and other items be 2:5, by how much should his salary be increased in order that he may maintain the same level of consumption as before, his present salary being Rs. 2590? `R s .323.75` b. `R s .350` c. `R s .360.50` d. none of these

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