624  Leg-Stamp
닭다리 개다리 1

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There are 130 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?

There are 170 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 710 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 6-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 6-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1350 cents. How many 4-cent stamps are there?

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