922  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 190 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 260 heads of Chickens and Dogs together. Altogether there are 760 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 130 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 760 cents. How many 7-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 940 cents. How many 7-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1100 cents. How many 6-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?



There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1100 cents. How many 7-cent stamps are there?

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