raja spends 60 % of his monthly income on household items , 10 % of his monthly income on buying cloths , 10 % of his monthly income on medicines and saves the remaining amount which is rs . 5000 . find his monthly income .
"savings 20 % - 5000 expenditure 80 % - 20000 total - 25000 answer : d"
divide(5000, subtract(const_1, add(add(divide(60, const_100), divide(10, const_100)), divide(10, const_100))))