889  Leg-Stamp
닭다리 개다리 1

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There are 150 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?

There are 140 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1150 cents. How many 4-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 4-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1050 cents. How many 8-cent stamps are there?

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