912  Leg-Stamp
닭다리 개다리 1

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There are 240 heads of Chickens and Dogs together. Altogether there are 700 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 150 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 100 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?

There are 240 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1450 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1320 cents. How many 8-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?

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