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例1(2013四川凉山州)根据图中给出的信息,解答下列问题:(1)放入一个小球水面升高__cm,放入一个大球水面升高__cm;(2)如果要使水面上升到50cm,应放入大球、小球各多少个?思路分析:(1)利用图形给出的信息就可以得到放入一个小球水面升高多少,放入一个大球水面升高多少;(2)利用(1)中的信息可列方程组可解得.解:(1)2cm,3 cm;
Example 1 (Liangshan Prefecture, Sichuan Province, China) According to the information given in the picture, answer the following questions: (1) put a small ball water surface rise __cm, into a large ball water surface rise __cm; (2) if you want So that the water rose to 50cm, should be placed in the big ball, the ball each number of ideas Analysis: (1) the information given by the graphics can be put into a small ball water rise, into a large ball of water or (2) Use the information in (1) to solve the equations. Solution: (1) 2cm, 3cm;