Answers

2015-08-15T07:06:32+08:00
Let x be the number of chickens; y be the number of goats.

x+y=36. number of heads
2x+4y=102.

2x+2y=72. from eq 1 multiplied by 2
2x+4y=102. subtract
-2y=-30. divide by -2
y=15. so may 15 goats

substitute from equation
x+y=36
x+15=36. get x by APE
x=36-15
x=21

note: 2x dahil may dalawang paa ang chicken at 4y dahil apat ang paa ng goat.

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