Zhejiang education edition, the second volume of junior high school mathematics review questions will be done.

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(1) In 2000, there were 7 1.40% more fixed telephone users than mobile telephone users in China, and 3.64% more fixed telephone users than mobile telephone users in China in 2002.

(2) In 2002, the number of mobile phone users increased by 144.4% compared with that in 2000, and the actual growth of fixed phone users from 1999 to 2000 was 2.06 million more than that from 5438+0 in 2006 to 2002.

Year 1999 2000 200 1 2002

Fixed telephone users (ten thousand households) 10872 D 18037 B

Mobile phone users (ten thousand households) 4330 C 14522 A

Total (ten thousand households) 15202d+C32559b+A

Problem supplement: It is better to have a process, or not, a process of pursuing integral.

In 2000, the number of fixed telephone users in China was 765,438+0.40% more than that of mobile telephone users.

d = C *( 1+7 1.40%)= 1.7 14 * C

In 2002, there were 3.64% more fixed telephone users than mobile telephone users in China.

b = A *( 1+3.64%)= 1.0364 * A

In 2002, the number of mobile phone users increased by 144.4% compared with 2000.

B=244.4%*D=2.444*D

The actual growth of fixed telephone users from 1999 to 2000 was 2.06 million more than that from 2000/kloc-0 to 2002.