on a farm there are three kinds of animals: pigs, cows and horses. 25% are pigs and 40% are cow. if there are 20 pigs how many horses are there?

Question

anonymous · Answer

if 20 are pigs and 25% are pig then the total number of animals is 20*4 = 80
so 40% of 80 is 32.

anonymous · Answer

why did you times the 20 by 4?

anonymous · Answer

think about how  4 parts of 25% (or 1/4) make up the whole
so 4 *25% = 100% 
in this case the value of 25% is 20 pigs 
to find out how many farm animals there are total you have to multiply the value you know (20 pigs) by 4 --> meaning there are 80 animals on the farm 

from there you find out how many horses there are

anonymous · Answer

*cows not horses

anonymous · Answer

ok i get it...so there are 32 cows on the farm

anonymous · Answer

so there are 48 horses?

anonymous · Answer

well if there are 80 total animals and we know 20 are pig and 32 are cows you just have to set up 80-(20 +32) = # of horses