299  Leg-Stamp
닭다리 개다리 1

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There are 160 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 360 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 220 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1210 cents. How many 4-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 750 cents. How many 4-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1390 cents. How many 8-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1440 cents. How many 4-cent stamps are there?

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