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【Daily Question】Utilities – Civil Engineering – 20190414

2019-04-14View Original

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For the trial-mixed concrete, the total weight of sand and gravel calculated to be 1880 kg; with a sand ratio of 30%, the amount of gravel required is (  ) kg.   A、1361   B、1316   C、564   D、654    【Answer】B   【Explanation】The sand ratio is defined as the percentage of the weight of sand in the total weight of sand and gravel. Given that the sand ratio is 30%, the aggregate ratio is 70%; therefore, the amount of aggregate required is: 1880*70% = 1316 kg.

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