590  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 240 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



우리 안에 총 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 340 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 260 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1300 cents. How many 4-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 840 cents. How many 4-cent stamps are there?



오늘 5원짜리 9원짜리 우표 총 130장을 사고, 890 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 130 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 640 cents. How many 4-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1310 cents. How many 4-cent stamps are there?

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