743  Leg-Stamp
닭다리 개다리 1

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There are 170 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?

There are 220 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 920 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 670 cents. How many 4-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 6-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 730 cents. How many 7-cent stamps are there?

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