593  Leg-Stamp
닭다리 개다리 1

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There are 210 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 520 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 190 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 560 legs. How many chickens are there?

There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1280 cents. How many 8-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1140 cents. How many 3-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1310 cents. How many 8-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?

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