856  Leg-Stamp
닭다리 개다리 1

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There are 220 heads of Chickens and Dogs together. Altogether there are 640 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 230 heads of Chickens and Dogs together. Altogether there are 640 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 170 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?

There are 140 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 980 cents. How many 8-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 6-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 900 cents. How many 3-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 990 cents. How many 6-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?

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