64 1 100x, the solution is: 1 1254x?

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X (irrelevant, omitted),100125%125? A: By the end of 20 10, the number of family cars in the community will reach 125. (2) If the community can build an indoor parking space and B outdoor parking spaces, then:

0. 50. 1 1522.5 Addis Ababa

①

≤≤≤ ② From ①: b= 150-5a to ②: 20a 150.

≤≤7

，a？ Is a positive integer. =20 or 2 1, when 20a? Time 50b? 2 1a? When is 45b? .

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