771  Leg-Stamp
닭다리 개다리 1

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There are 250 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 190 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 520 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 140 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 700 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1150 cents. How many 5-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 660 cents. How many 6-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1320 cents. How many 8-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?

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