864  Leg-Stamp
닭다리 개다리 1

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There are 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 560 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 130 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?

There are 240 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1070 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 3-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?

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