851  Leg-Stamp
닭다리 개다리 1

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There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 180 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 300 legs. How many chickens are there?



There are 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 230 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1160 cents. How many 6-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?



There are 260 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1490 cents. How many 7-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?

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