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10-08-2017
Mathematics

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There are 32 animals in a barn some are chickens and some are pigs. Altogether there are 84 legs how many chickens and pigs are there

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musiclover10045 musiclover10045

10-08-2017

c = chicken

p= pig

c +p =32

32-p=c

2c +4p =84

2(32-p) +4p = 84

64-2p +4p =84

2p = 20

p = 10

32-10 = 22

check: 4 x 10 = 40, 2 x 22 = 44, 40+44=84

there are 10 pigs and 22 chickens

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