506  Leg-Stamp
닭다리 개다리 1

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There are 100 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?

There are 160 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 8-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 6-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 540 cents. How many 3-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1290 cents. How many 6-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there?

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