Three ratios equivalent to the 8/10
4:5, 16:20, and 12:15
4:5 16:20, 12:15 ARE THE EQUIVALENT FRACTIONS FOR 8:10
The simplest would be 4/5
So now just multiply top and bottom by any non-zero whole number you want and you have an equivalent ratio.
e.g. (4*6)/(5*6) or (4/5)(6/6) = 24/30 , etc