powelljajuan72 powelljajuan72
  • 01-06-2020
  • Mathematics
contestada

Concrete is made by mixing cement sand and gravel in the ratio 5:9:13 how much cement is needed to make 324 ft of concrete

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Persona180
Persona180 Persona180
  • 01-06-2020

Answer:

156 ft

Step-by-step explanation:

5x+9x+13x=324

27x=324

x=12

13(12)=156

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