902  Leg-Stamp
닭다리 개다리 2

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There are 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 240 legs. How many chickens are there?



우리 안에 총 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 380 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 230 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?

There are 200 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1500 cents. How many 8-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1560 cents. How many 4-cent stamps are there?



오늘 6원짜리 8원짜리 우표 총 240장을 사고, 1620 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 180 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 830 cents. How many 3-cent stamps are there?

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