Answer :
cows=10 units
horses=3 units
if 20 cows then
10 units=20 then
1 unit=2
so horses=3 units
1 unit=2
2 times 3=6
6 horses
horses=3 units
if 20 cows then
10 units=20 then
1 unit=2
so horses=3 units
1 unit=2
2 times 3=6
6 horses
the radio of cows to horses is 20:6 b/c 10 x __ = 20 so if 10 x 2 = 20 so then 3 x 2 = 6