292  Leg-Stamp
닭다리 개다리 1

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There are 140 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?

There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 930 cents. How many 7-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 880 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1400 cents. How many 5-cent stamps are there?

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