1.half a kilo of apples ** how much money?three kilo of apples?2.i want to buy half a kilo of watermelon i want to buy three kilograms of pineapple 3.half a kilo of apples ** about 10 yuan three kilos of apples ** 60 yuan 4.i want to buy 500 grams of fruit sugar 500 grams of fruit sugar ** how much money 20210311