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Look at the answers and answer the math questions.
The fourth question:

1.

According to the image, the number of gold medals in the United States is 36, that in Russia is 23, and that in China is 5 1.

The United States is China's gold medal count: 36/51* =12/17.

Russia is China's gold medal count: 23/5 1.

2.

Total number of medals in China = number of gold medals+silver medals+bronze medals = 51+21+28 =100;

Total number of medals in Russia = number of gold medals+silver medals+bronze medals = 23+21+28 = 72;

Total medals in the United States = gold+silver+bronze =36+38+36= 1 10.

China has fewer medals than the United States: (110-100)/1/kloc-0 =11;

The total number of medals in Russia is less than that in the United States: (110-72)/10 =19/55.

3.

The topic can be set as follows: How much is the total number of Russian medals less than that of China?

The total number of medals in Russia is less than that in China: (100-72)/ 100=7/25.