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Giả sử có 3 bóng đèn điện : đèn 1 (Đ1) , đèn 2 (Đ2) , Đèn 3 (Đ3) đều có U=220V. Biết tổng công suất định mức 3 bóng đèn là 130W , trong đó công suất định mức Đ1 bằng 3/2 công suất định mức Đ2 và công suất định mức Đ2 bằng 4/3 công suất định mức Đ3. Tìm công suất định mức mỗi đèn.
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Read the passage and answer the questions below: Once, there was a king in Tibet who loved to eat fish. His love for fish was so great that he couldn’t eat anything if there was no fish on the table. It happened one year that there was no rain. Month after month, there was less and less water in the rivers, and less and less fish, until there was no fish at all, even for the king. The king could not eat everything. He sent men to all the fishermen’s villages in the country to announce that the man who brought fish to the king’s table could have any reward he asked for. Some time passed and a poor fisherman appeared in front of the king’s palace, carrying a lot of fish. When the guard at the gate saw the fisherman coming towards him, he immediately knew who the man was taking the fish to, so he asked the man to give the fish to him. The fisherman did not agree. The guard finally agreed to let him go on the condition that the fisherman had to give him half of his reward. After the fisherman met the king, the king asked him what he wanted for the reward. Surprisingly, the fisherman asked for thousand blows and he shared his reward to the guard at the gate. This gave the guard a lesson about being dishonest 1. Who loved to eat fish? 2.Why was there no fish at all? 3. Who could have any reward? 4. Who appeared in front of the king’s palace? 5. What did the fish man ask for?

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