Find the least common denominator (LCD) of 1/20 and 11/8

Mathematics · High School · Wed Jan 13 2021

Answered on

Given the values:

1 / 20

11/8

Determine the least common denominator.

Solution:

In order to determine the least common denominator, we simply need to list the multiples of 8 and 20 first, then find which is common.

Multiples of 8:

8, 16, 24, 32, 40, 48, 56, 64, 72, 80, …

Multiples of 20:

20, 40, 60, 80, 100, 120, 140, 160, 180, 200, …

It can be seen that the least common denominator is 40.

Final answer:

Least Common Denominator = 40