Question

Three investors own a company. One partner owns 1/4 of the company , while the second partner owns 2/5 of the company . How much does the third partner own ?

Answer 1

7/20

Explanation:

multiply 1/4 by 5/5 and 2/5 by 4/4 and you will get 5/20 and 8/20 and add them together and you get 13/20. Subtract 13/20 from 1 (20/20) and you get 7/20

Answer 2

We want to add these together and then subtract from one. So to add them, find a common denominator.
The closest common denominator is 20.
So convert the fractions:
5/20 and 8/20
Then add
5/20 + 8/20 = 13/20
And then subtract from 1.
1 - 13/20 = 7/20
The third partner owns 7/20 of the company.