Question

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

Answer 1

Answer:

Length of 1st Ribbon is 14cm, Length of 2nd Ribbon is 10cm and Length of 3rd Ribbon is 18cm.

Step-by-step explanation:

Sum of lengths of all Ribbons = 42

Lengths of Ribbons = 7:5:9

Now,

To find lengths of all Ribbons

7x+5x+9x = 42

21x = 42

x = 42÷21

x = 2cm

Now,

7x = 7×2cm

= 14cm

5x = 5×2cm

= 10cm

9x = 9×2cm

= 18cm