336  Leg-Stamp
닭다리 개다리 1

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There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 540 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 200 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?

There are 120 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 630 cents. How many 4-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1060 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 610 cents. How many 4-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1670 cents. How many 8-cent stamps are there?

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