Question

5) Divide 30cm into the ratio 2: 4

Answer 1

Answer:

First add the given ratio numbers, as follows:

2 + 4 = 6

The left hand number of the required ratio is given by:

\frac{2}{6}\times 30=10

6

2

×30=10

The right hand number of the required ratio is given by:

\frac{4}{6}\times30=20

6

4

×30=20

The required ratio is 10 : 20

Answer 2

As per the data given in the question,

We have to divide 30 cm into two parts such that the parts are in ratio of 2:4

So, let us assume that,

The parts are $2x \:and\:4x$ respectively.

So, total share will be $=(2x+4x) = 6x$

As 30 cm is divided into two parts.

So, we can say that, 6x should be equal to 30 cm.

So, after solving the equation, we will get it as,

$6x = 30\\=> x =\frac{30}{6} = 5\:cm$

Hence, both parts will be $2x = (2\times 5) = 10\:cm \: and\; 4x = (4\times 5) = 20\:cm$