361  Leg-Stamp
닭다리 개다리 1

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There are 150 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?

There are 230 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1720 cents. How many 7-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1140 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 970 cents. How many 6-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?

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