130  Leg-Stamp
닭다리 개다리 1

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



There are 140 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 230 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1370 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1220 cents. How many 5-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1790 cents. How many 7-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1560 cents. How many 8-cent stamps are there?

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