279  Leg-Stamp
닭다리 개다리 1

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There are 130 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?

There are 210 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1340 cents. How many 4-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1240 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?

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