比15米多80%是（）米?比12米少（）%是9米?

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比15米多80%是（）米?比12米少（）%是9米?比15米多80%是（）米?比12米少（）%是9米?比15米多80%是（）米?比12米少（）%是9米?比15米多80%,用15x80%+15=27米.第

比15米多80%是（）米?比12米少（）%是9米?
比15米多80%是（）米?比12米少（）%是9米?

比15米多80%是（）米?比12米少（）%是9米?
比15米多80%,用15x80%+15=27米.第二空为(12-9)÷12=25%.