141  Leg-Stamp
닭다리 개다리 1

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There are 240 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 660 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 240 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?

There are 160 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1510 cents. How many 5-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1450 cents. How many 8-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?

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