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fgiga [73]
2 years ago
12

Concrete is made by mixing cement, sand, and

Mathematics
2 answers:
Minchanka [31]2 years ago
6 0

Answer:

60 ft.

Step-by-step explanation

The fraction of cement on the concrete  

=  5 / (5+9+13)

= (5/27) * 324

= 5 * 12

= 60 ft.

prohojiy [21]2 years ago
5 0

Answer:

60

Step-by-step explanation:

Sum the parts of the ratio, 5 + 9 + 13 = 27 parts

Divide the amount of concrete by 27 to find the value of one part of the ratio.

324 ÷ 27 = 12 ← value of 1 part of the ratio , thus

5 parts = 5 × 12 = 60 ← cement

9 parts = 9 × 12 = 108 ← sand

13 parts = 13 × 12 = 156 ← gravel

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