Question

the length of three ribbons are in the ratio 7:5:9 if the sum of the length of the three Ribbons is 42 cm,find the length of the smallest Ribbons. ​

Answer 1

Answer:

The smallest length is 10cm....

Step-by-step explanation:

Let the ratios be 7x, 5x and 9x respectively....

Total length of ribbon is 42 cm...

7x+5x+9x =42

21x=42

x=42/21

x=2....

7x= 7*2= 14

5x= 5*2= 10

9x= 9*2= 18

The length of ribbons are 14cm, 10cm and 18cm....

So the smallest length of ribbon is 10cm....

Hope it helps you if yes than please mark me as brilliant..... Have a good day....

Answer 2

Answer:

10 cm

Step-by-step explanation:

Given:

Ratio of length of three ribbons = 7:5:9

Sum of the length of the three ribbons = 42 cm

To Find:

The length of the smallest ribbon.

Solution:

Let the ratio be x

1st ribbon = 7x

2nd ribbon = 5x

3rd ribbon = 9x

Equation:

7x + 5x + 9x = 42 cm

21x = 42 cm

x = $\frac{42}{21}$

  = 2 cm

The smallest ribbon = 5x

                                 = 10 cm

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