948  Leg-Stamp
닭다리 개다리 2

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There are 200 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



우리 안에 총 170 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 580 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 220 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1720 cents. How many 7-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1950 cents. How many 6-cent stamps are there?



오늘 5원짜리 9원짜리 우표 총 210장을 사고, 1450 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 130 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there?

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