shannonantonia shannonantonia
  • 26-01-2019
  • Mathematics
contestada

4 bags of cement do 18 m² how many m^2 can be done with seven bags

Respuesta :

MrsStrong
MrsStrong MrsStrong
  • 26-01-2019

Answer:

31.5 m^2

Step-by-step explanation:

To find the amount for 7 bags, create a proportion.

[tex]\frac{4}{18} =\frac{7}{y}[/tex]

To solve for y, cross multiply numerator to denominator of each fraction.

4(y) = 18(7)

4y= 126

y= 31.5

7 bags will do 31.5 m^2

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