Mathematics, 30.07.2019 18:00 pineappledogpie1608

Achemical engineer has tested 56 water samples. these samples make up 25% of the total number of samples that need testing. ? ? select from the drop-down menu to correctly identify the total number of water samples that need testing. ? ? there are a total of water samples to be tested. choices a. 1.4 b. 14 c. 168 d. 224

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