386  Leg-Stamp
닭다리 개다리 1

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



There are 200 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 240 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1440 cents. How many 7-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 920 cents. How many 8-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1260 cents. How many 4-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1020 cents. How many 5-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?

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