有甲乙两堆煤,甲堆重量比乙堆重量的四分之三少24吨,从乙堆运48吨到甲堆,甲堆正好是乙堆的八分之十一,

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  • (48-24)÷(4/7-8/19)

    =24÷(76/133-56/133)

    =24÷(20/133)

    =798/5吨

    798/5-[798/5*(3/7)-24]*2

    =798/5-[2394/35-24]*2

    =798/5-[1554/35]*2

    =798/5-3108/35

    =70.8