237  Leg-Stamp
닭다리 개다리 1

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There are 130 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?

There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1340 cents. How many 7-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 790 cents. How many 7-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1420 cents. How many 6-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1140 cents. How many 7-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1100 cents. How many 8-cent stamps are there?

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