Math problem: 1. Qingyun Primary School used 550 cubic meters of water in September, saving 20% in 10 compared with September. How many cubic meters of water is used in October? (Equation solving)

1. Qingyun primary school used 550 cubic meters of water in September, 10 saved 20% compared with September. How many cubic meters of water is used in October? (Equation solving)

Suppose that the water in 10 is x cubic meters.

X=550 *( 1-20%)

X=440

Answer:/kloc-The water consumption in October is 440 cubic meters.

2. If X represents the cubic meters of water used in September, then the cubic meters saved in1October is (20%X).

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