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I need help with this math question?
In a mixture of concrete, there are four pounds of cement mix for each pound of gravel, if the mixture total contains 75 pounds of both ingredients, how many pounds of gravel is in the mixture. Please tell me how to set this up and how to answer. Thanks
1 Answer
- M3Lv 71 decade agoFavorite Answer
5 lbs of concrete contain 1 lb of gravel, so
75 lbs of concrete will contain (75/5)*1 lbs of gravel
= 25 lbs
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simple ratio & proportion
