227  Leg-Stamp
닭다리 개다리 1

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There are 140 heads of Chickens and Dogs together. Altogether there are 480 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 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



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

There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 990 cents. How many 4-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1550 cents. How many 6-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 3-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1230 cents. How many 7-cent stamps are there?

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