404  Leg-Stamp
닭다리 개다리 1

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There are 170 heads of Chickens and Dogs together. Altogether there are 560 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 90 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 240 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 210 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 3-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 8-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1280 cents. How many 4-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1020 cents. How many 7-cent stamps are there?

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