487  Leg-Stamp
닭다리 개다리 2

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There are 190 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



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



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 600 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 160 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 190 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1060 cents. How many 6-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



오늘 4원짜리 8원짜리 우표 총 200장을 사고, 1000 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 170 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1460 cents. How many 8-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1100 cents. How many 3-cent stamps are there?

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