350  Leg-Stamp
닭다리 개다리 1

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There are 110 heads of Chickens and Dogs together. Altogether there are 320 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 130 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?

There are 240 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1070 cents. How many 5-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



There are 120 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 460 cents. How many 3-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 630 cents. How many 3-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 800 cents. How many 3-cent stamps are there?

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