679  Leg-Stamp
닭다리 개다리 2

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There are 130 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



우리 안에 총 160 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 500 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 260 heads of Chickens and Dogs together. Altogether there are 760 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 250 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1550 cents. How many 4-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 890 cents. How many 5-cent stamps are there?



오늘 4원짜리 5원짜리 우표 총 220장을 사고, 990 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 190 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 5-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 910 cents. How many 8-cent stamps are there?

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