128  Leg-Stamp
닭다리 개다리 1

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There are 190 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 680 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 190 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 880 cents. How many 4-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1520 cents. How many 7-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 990 cents. How many 4-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there?

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