106  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 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1540 cents. How many 8-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 4-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 560 cents. How many 3-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1160 cents. How many 7-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?

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