Answer to Friday's problem: 1 head of cabbage will balance with 6 ½ tomatoes. If 3 lemons balance with 1 ½ tomatoes, then 1 lemon is equal in weight to ½ tomato. To find out how many tomatoes balance with the cabbage, subtract the equivalent of a lemon, or half a tomato, from each side.
Pam bought 50 kg of sugar yesterday. She used 10 kg of sugar for making cotton candies. What fraction of sugar is left?