Find the length of the broken line if it consists of 2 links, and one link is 2.5 cm shorter

Find the length of the broken line if it consists of 2 links, and one link is 2.5 cm shorter than the other and is 0.8 of its length.

We understand that one broken link is longer than the other, you can count which part is longer

1 – 0.8 = 0.2.

And this part is equal to 2.5 centimeters, let’s determine how many centimeters the whole link is.

0.2 = 2.5 cm;

2.5 cm: 0.2 = 2.5: 2 * 10 = 12.5 cm.

And the other link is 2.5 cm shorter, which means its length can be found by subtraction

12.5 cm – 2.5 cm = 10 cm.

Then, to find the entire length of the broken line, add the lengths of these two links

10 cm + 12.5 cm = 22.5 cm.

Answer: The length of the broken line is 22.5 centimeters.