george went to a fruit market with certain amount of money . with this money he can buy either 40 oranges or 40 mangoes . he retains 10 % of the money for taxi fare and buys 20 mangoes . how many oranges can he buy ?
"let the amount of money be 200 let cost of 1 orange be 4 let cost of 1 mango be 4 he decides to retain 10 % of 200 = 20 for taxi fare , so he is left with 180 he buys 20 mangoes ( @ 4 ) so he spends 80 money left is 100 ( 180 - 80 ) no of oranges he can buy = 100 / 4 = > 25 so , george can buy 25 oranges . a"
multiply(subtract(subtract(const_1, divide(10, const_100)), divide(20, 40)), 40)