Question

3/5 of the animals on the farm are cows. The rest are chickens.
There are 18 cows. How many are chickens?
Ms. Sue
(3/5)x = 18

x = 30 = total animals

Sue
The ratio of goats to cows in a farm is 5:3 if there are 20 more goats than cows, how many animals are there in the farm?