545  Leg-Stamp
닭다리 개다리 1

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There are 120 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 180 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 8-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 920 cents. How many 3-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 710 cents. How many 5-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 4-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1100 cents. How many 4-cent stamps are there?

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