Question

What is the least common denominator of 3/10 and 1/4?

Answer 1

LCD is `20`.

Explanation:

The denominators in `3/10` and `1/4` are `10` and `4`.

Factors of `10` are `2xx5` and `2xx2`.

Hence LCD should have two 2's and one 5 i.e. `2xx2xx5=20` and fractions can be written as `6/20` and `5/20`.