计算题.1.At 12 noon my watch was correct. However, it then started to lose 18 minutes per hour. Four hours ago it stopped completely and is now showing the time as 15:30.What is the correct time now?Answ 题目和参考答案——青夏教育精英家教网—

题目内容

计算题.

1.At 12 noon my watch was correct. However, it then started to lose 18 minutes per hour.
Four hours ago it stopped completely and is now showing the time as 15:30.
What is the correct time now?
Answer: _____________________________________________________________
2.

What value of weight should be placed on the scales to balance?
Answer: _____________________________________________________________

1. 9 pm. 2. 75 kg.

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AVERAGE RESOURCES
620 m³water	If we put fresh water and sea water together, we can each have 620 m³ water. But remember, sea water is too salty for us to drink if the factories don’t process it first. So, 620 m³ is little. Saving water in daily use is important.
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33 stars	According to the latest report, there are 200 billion stars in the Milky Way. Each of us can have 33 of them. Unfortunately, we cannot see most of the 200 billion stars from Earth. We can only see about 6,000 stars. If we don’t use telescopes or we have bad weathers, we can only see about 2,000 stars.
90kg rice	On average, we harvest 0.54 billion tons of rice each year round the world and each of us can have 90 kg. Asia produces and eats 90% of all the rice. How long will it take you to eat up this 90 kg rice?
1 iceberg	Luckily, we still have icebergs to share when Earth gets warmer and warmer. Each of us can have an iceberg of 170m×170m×170m. Up to 10% of Earth surface is covered by ice. There is 31,000,000km³ of ice on Earth in all.