132  Leg-Stamp
닭다리 개다리 1

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There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 640 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 170 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 130 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 510 cents. How many 3-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1360 cents. How many 6-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 4-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1590 cents. How many 7-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1300 cents. How many 6-cent stamps are there?

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