Question

In a pen holder,the umber of blue,black and red pens are in the ratio 1:2:3 respectively. If there are 6 black pens . Find the number of red pens.​

Answer 1

Answer:

9 red pens

Step-by-step explanation:

Blue : black : red

1. : 2. : 3

black pen - 2x = 6

therefore x= 3

so number of red pens = 3×3=9

Answer 2

Final answer:

There are 9 red pens in the pen holder.

Given:

In a pen holder, the number of blue , black and red pens are in the ratio

1 : 2 : 3 respectively.

Number of black pens is 6

To find:

The number of red pens in the pen holder.

Solution:

Step 1 of 2:

In a pen holder, the number of blue , black and red pens are in the ratio

1 : 2 : 3 respectively.

Therefore,  the number of blue , black and red pens are 1x , 2x and 3x respectively.

Number of black pens is 6

2x = 6

x = $\frac{6}{2}$

x = 3

Step 2 of 2:

Number of red pens is 3x

Here, x = 3

Therefore,

Number of red pens = 3 × 3

Number of red pens = 9