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If 2 over 7 of a ton of concrete covers 7 over 8 of a wall, how many tons of concrete are required to cover the entire wall?
a. 1/4 ton
b. 16/49 ton
c. 5/7 ton
d. 65/56 tons

Respuesta :

naǫ
2/7 of a ton of concrete - 7/8 of a wall
x of a ton of concrete - 1 of a wall (the entire wall)

The proportion:
[tex]\frac{\frac{2}{7}}{\frac{7}{8}}=\frac{x}{1} \\ \frac{2}{7} \times \frac{8}{7} = x \\ \frac{16}{49}=x[/tex]

The answer is b. 16/49 ton.
andymejias123

Answer:

The answer is b) 16/49 ton

Step-by-step explanation:

How? well The proportion is

2/7 over 7/8 = x/1

7/8 x 2/7 = x

16/49 = x

So b) 16/49 is the answer

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