Question

Luis Marissa and Federico are raising money for a school trip Luis has raised 6/7 of the total amount needed,Marissa has raised 5/9 of the total amount needed and Federico has raised 11/10 of the total amount needed.Who has raised the MOST Money

Answer 1

Federico

Explanation:

Answer 2

Fredrico

The obvious answers because it is the only mixed fraction. It is already more than the others

OR you can say

Lcm of 7, 10, 9 is 630

9=3×3
10=2×5
7=7

Looking at the prime factorizations, all the factors need to be included. And so we'll get:
2×3×3×5×7=630

Let's check it:
630=9×(2×5×7)

630=10×(3×3×7)

630=7×(2×3×3×5)

The new fractions would be

540/630 for Luis

350/630 for Marissa

And 693/630 for Federico