153  Leg-Stamp
닭다리 개다리 1

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There are 250 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 270 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1860 cents. How many 6-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1290 cents. How many 3-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 940 cents. How many 6-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 830 cents. How many 4-cent stamps are there?

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