285  Leg-Stamp
닭다리 개다리 1

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There are 170 heads of Chickens and Dogs together. Altogether there are 580 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 140 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 190 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1070 cents. How many 3-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 850 cents. How many 5-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1150 cents. How many 5-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 840 cents. How many 4-cent stamps are there?

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