By what percentage is the segment AB = 12 cm shorter than the segment CD = 15 cm?

univerkov | August 8, 2021 | education

Let us determine, by making a proportion, by how many% the segment AB = 12 cm is less than CD = 15 cm:

x = 12 cm,

100% = 15 cm.

Let’s write the equation, acting according to the “cross” rule and find the value of the variable:

x = 100 * 12: 15 = 1200: 15 = 80% = is 12 of 15.

Let’s find the difference:

100 – 80 = 20% 12 <15.

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