868  Leg-Stamp
닭다리 개다리 1

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



There are 230 heads of Chickens and Dogs together. Altogether there are 680 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 190 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?

There are 270 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1680 cents. How many 8-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 5-cent stamps are there?



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



There are 180 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1170 cents. How many 6-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1430 cents. How many 7-cent stamps are there?

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