Question

2:12 proportion?: 80​

Answer 1

Answer:

0.4

Step-by-step explanation:

Let the unknown number be x.

2:12::x:80

2×12=80×x

x= 2×12/80

x= 24/80= 3/10= 0.4

Proportion = 2:12::0.3:80

Answer 2

Given: $2:12 ::?: 80$

We have to find the missing number.

As we know that a proportion is an equation in which two ratios are set equal to each other.

We are solving in the following way:

We have,

$2:12 ::?: 80$

Let assume the missing number be$x$.

Now,

$2:12 =x: 80$

$=>\frac{2}{12} =\frac{x}{80} \\\\=>2\times 80=x\times 12\\\\=>160=12x$

Now, we will separate the variables on one side and the constant on another side.

$=>x=\frac{160}{12} \\\\=>x=\frac{40}{3}$

Hence, we get,$2:12::\frac{40}{3} : 80$