378  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 160 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



There are 70 heads of Chickens and Dogs together. Altogether there are 200 legs. How many chickens are there?



There are 230 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 460 legs. How many chickens are there?

There are 120 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 810 cents. How many 8-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1570 cents. How many 8-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1060 cents. How many 4-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1050 cents. How many 6-cent stamps are there?

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