691  Leg-Stamp
닭다리 개다리 1

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



There are 170 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?

There are 240 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1480 cents. How many 8-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1240 cents. How many 4-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 6-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 5-cent stamps are there?

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