303  Leg-Stamp
닭다리 개다리 1

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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 460 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?

There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1070 cents. How many 4-cent stamps are there?



There are 280 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1940 cents. How many 6-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1330 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?

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