880  Leg-Stamp
닭다리 개다리 1

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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 460 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?

There are 170 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1090 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?

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