164  Leg-Stamp
닭다리 개다리 1

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There are 270 heads of Chickens and Dogs together. Altogether there are 800 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?

There are 150 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 6-cent stamps are there?



There are 130 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 680 cents. How many 6-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1500 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?

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