Bob is a clever boy, but he is a little lazy. One day his math teacher assigns a lot of math homework for him. He is doing his math homework at home. There are so many numbers that makes him feel very boring. Then he has a good idea. He goes to a shop in a hurry with his notebook. “Can I help you?” the shop assistant asks him.
“Yes, I'd like two kilos of carrots, three kilos of potatoes and three kilos of onions.” Bob says.
“It's eight kilos. Do you need a shopping bag?” the shop assistant says.
Bob writes the answer on his notebook, and says “No, thanks. And I would like four kilos of apples, one kilo of bananas and two kilos of pears, too.”
“It's seven kilos. But I'm afraid it's too heavy for you to carry”, the shop assistant says in surprises. “ You don't have a shopping bag, how you take them home.”
Bob writes the answers on his notebook quickly and says “I'm sorry, I don't want to buy them now.” Then he runs home.
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