612  Leg-Stamp
닭다리 개다리 1

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There are 220 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 260 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?

There are 150 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1150 cents. How many 8-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1510 cents. How many 5-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1260 cents. How many 3-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1490 cents. How many 8-cent stamps are there?

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